diff --git a/kfet/forms.py b/kfet/forms.py
index 80504b03..317effb3 100644
--- a/kfet/forms.py
+++ b/kfet/forms.py
@@ -1,21 +1,17 @@
 # -*- coding: utf-8 -*-
 
-from __future__ import (absolute_import, division,
-                        print_function, unicode_literals)
-from builtins import *
-
 from decimal import Decimal
 from django import forms
 from django.core.exceptions import ValidationError
 from django.core.validators import MinLengthValidator
 from django.contrib.auth.models import User, Group, Permission
 from django.contrib.contenttypes.models import ContentType
-from django.forms import modelformset_factory, inlineformset_factory
-from django.forms.models import BaseInlineFormSet
+from django.forms import modelformset_factory
 from django.utils import timezone
-from kfet.models import (Account, Checkout, Article, OperationGroup, Operation,
+from kfet.models import (
+    Account, Checkout, Article, OperationGroup, Operation,
     CheckoutStatement, ArticleCategory, Settings, AccountNegative, Transfer,
-    TransferGroup, Supplier, Inventory, InventoryArticle)
+    TransferGroup, Supplier)
 from gestioncof.models import CofProfile
 
 # -----
@@ -131,7 +127,16 @@ class UserRestrictTeamForm(UserForm):
 
 class UserGroupForm(forms.ModelForm):
     groups = forms.ModelMultipleChoiceField(
-            Group.objects.filter(name__icontains='K-Fêt'))
+            Group.objects.filter(name__icontains='K-Fêt'),
+            required=False)
+
+    def clean_groups(self):
+        groups = self.cleaned_data.get('groups')
+        # Si aucun groupe, on le dénomme
+        if not groups:
+            groups = self.instance.groups.exclude(name__icontains='K-Fêt')
+        return groups
+
     class Meta:
         model  = User
         fields = ['groups']
diff --git a/kfet/models.py b/kfet/models.py
index 55ae7b76..ca9fa177 100644
--- a/kfet/models.py
+++ b/kfet/models.py
@@ -18,6 +18,7 @@ from django.db.models import F
 from django.core.cache import cache
 from datetime import date, timedelta
 import re
+import hashlib
 
 def choices_length(choices):
     return reduce(lambda m, choice: max(m, len(choice[0])), choices, 0)
@@ -154,6 +155,7 @@ class Account(models.Model):
     # - Enregistre User, CofProfile à partir de "data"
     # - Enregistre Account
     def save(self, data = {}, *args, **kwargs):
+
         if self.pk and data:
             # Account update
 
@@ -200,6 +202,11 @@ class Account(models.Model):
             self.cofprofile = cof
         super(Account, self).save(*args, **kwargs)
 
+    def change_pwd(self, pwd):
+        pwd_sha256 = hashlib.sha256(pwd.encode('utf-8'))\
+                            .hexdigest()
+        self.password = pwd_sha256
+
     # Surcharge de delete
     # Pas de suppression possible
     # Cas à régler plus tard
@@ -561,7 +568,7 @@ class Operation(models.Model):
         templates = {
                 self.PURCHASE: "{nb} {article.name} ({amount}€)",
                 self.DEPOSIT: "charge ({amount})",
-                self.WITHDRAW: "retrait  ({amount})",
+                self.WITHDRAW: "retrait ({amount})",
                 self.INITIAL: "initial ({amount})",
             }
         return templates[self.type].format(nb=self.article_nb,
diff --git a/kfet/static/kfet/css/kpsul.css b/kfet/static/kfet/css/kpsul.css
index e7950914..ba88e433 100644
--- a/kfet/static/kfet/css/kpsul.css
+++ b/kfet/static/kfet/css/kpsul.css
@@ -8,7 +8,7 @@ input[type=number]::-webkit-outer-spin-button {
     margin: 0;
 }
 
-#account, #checkout, input, #history, #basket, #basket_rel, #previous_op, #articles_data {
+#account, #checkout, #article_selection, #history, #basket, #basket_rel, #previous_op, #articles_data {
     background:#fff;
 }
 
@@ -252,7 +252,7 @@ input[type=number]::-webkit-outer-spin-button {
     width:100%;
 }
 
-#article_selection input {
+#article_selection input, #article_selection span {
     height:100%;
     float:left;
     border:0;
@@ -263,12 +263,12 @@ input[type=number]::-webkit-outer-spin-button {
     font-weight:bold;
 }
 
-#article_selection input+input {
+#article_selection input+input #article_selection input+span {
     border-right:0;
 }
 
 #article_autocomplete {
-    width:90%;
+    width:80%;
     padding-left:10px;
 }
 
@@ -277,14 +277,24 @@ input[type=number]::-webkit-outer-spin-button {
     text-align:center;
 }
 
+#article_stock {
+    width:10%;
+    line-height:38px;
+    text-align:center;
+}
+
 @media (min-width:1200px) {
     #article_autocomplete {
-        width:92%
+        width:84%
     }
 
     #article_number {
         width:8%;
     }
+
+    #article_stock {
+        width:8%;
+    }
 }
 
 /* Article data */
@@ -319,6 +329,10 @@ input[type=number]::-webkit-outer-spin-button {
     padding-left:20px;
 }
 
+#articles_data .article.low-stock {
+    background:rgba(236,100,0,0.3);
+}
+
 #articles_data .article:hover {
     background:rgba(200,16,46,0.3);
     cursor:pointer;
@@ -384,6 +398,11 @@ input[type=number]::-webkit-outer-spin-button {
     text-align:right;
 }
 
+#basket tr .lowstock {
+    display:none; 
+    padding-right:15px;
+}
+
 #basket tr.ui-selected, #basket tr.ui-selecting {
     background-color:rgba(200,16,46,0.6);
     color:#FFF;
diff --git a/kfet/static/kfet/js/kfet.js b/kfet/static/kfet/js/kfet.js
index 31758c36..bab21c12 100644
--- a/kfet/static/kfet/js/kfet.js
+++ b/kfet/static/kfet/js/kfet.js
@@ -37,9 +37,10 @@ function amountDisplay(amount, is_cof=false, tri='') {
     return amountToUKF(amount, is_cof);
 }
 
-function amountToUKF(amount, is_cof=false) {
+function amountToUKF(amount, is_cof=false, account=false) {
+    var rounding = account ? Math.floor : Math.round ;
     var coef_cof = is_cof ? 1 + settings['subvention_cof'] / 100 : 1;
-    return Math.floor(amount * coef_cof * 10);
+    return rounding(amount * coef_cof * 10);
 }
 
 function isValidTrigramme(trigramme) {
diff --git a/kfet/static/kfet/js/statistic.js b/kfet/static/kfet/js/statistic.js
index 258f8cc8..7ab56f1d 100644
--- a/kfet/static/kfet/js/statistic.js
+++ b/kfet/static/kfet/js/statistic.js
@@ -1,18 +1,197 @@
-var STAT = {};
+(function($){
+    window.StatsGroup = function (url, target) {
+        // a class to properly display statictics
+        
+        // url : points to an ObjectResumeStat that lists the options through JSON
+        // target : element of the DOM where to put the stats
+        
+        var self = this;
+        var element = $(target);
+        var content = $("<div>");
+        var buttons;
 
-jQuery(document).ready(function() {
-    // FONCTIONS
-    // Permet de raffraichir un champ, étant donné :
-    // thing_url : l'url contenant le contenu
-    // thing_div : le div où le mettre
-    // empty_... : le truc à dire si on a un contenu vide
-    STAT.get_thing = function(thing_url, thing_div, empty_thing_message) {
-        $.get(thing_url, function(data) {
-                if(jQuery.trim(data).length==0) {
-                    thing_div.html(empty_thing_message);
-                } else {
-                    thing_div.html(data);
-                }
-            });
-    }
-});
+        function dictToArray (dict, start) {
+            // converts the dicts returned by JSONResponse to Arrays
+            // necessary because for..in does not guarantee the order
+            if (start === undefined) start = 0;
+            var array = new Array();
+            for (var k in dict) {
+                array[k] = dict[k];
+            }
+            array.splice(0, start);
+            return array;
+        }
+
+        function handleTimeChart (dict) {
+            // reads the balance data and put it into chartjs formatting
+            var data = dictToArray(dict, 0);
+            for (var i = 0; i < data.length; i++) {
+                var source = data[i];
+                data[i] = { x: new Date(source.at),
+                            y: source.balance,
+                            label: source.label }
+            }
+            return data;
+        }
+        
+        function showStats () {
+            // CALLBACK : called when a button is selected
+            
+            // shows the focus on the correct button
+            buttons.find(".focus").removeClass("focus");
+            $(this).addClass("focus");
+
+            // loads data and shows it
+            $.getJSON(this.stats_target_url + "?format=json",
+                      displayStats);
+        }
+
+        function displayStats (data) {
+            // reads the json data and updates the chart display
+
+            var chart_datasets = [];
+            var charts = dictToArray(data.charts);
+            
+            // are the points indexed by timestamps?
+            var is_time_chart = data.is_time_chart || false;
+
+            // reads the charts data
+            for (var i = 0; i < charts.length; i++) {
+                var chart = charts[i];
+                
+                // format the data
+                var chart_data =  is_time_chart ? handleTimeChart(chart.values) : dictToArray(chart.values, 1);
+
+                chart_datasets.push(
+                    {
+                        label: chart.label,
+                        borderColor: chart.color,
+                        backgroundColor: chart.color,
+                        fill: is_time_chart,
+                        lineTension: 0,
+                        data: chart_data,
+                        steppedLine: is_time_chart,
+                    });
+            }
+
+            // options for chartjs
+            var chart_options =
+                {
+                    responsive: true,
+                    tooltips: {
+                        mode: 'index',
+                        intersect: false,
+                    },
+                    hover: {
+                        mode: 'nearest',
+                        intersect: false,
+                    }
+                };
+
+            // additionnal options for time-indexed charts
+            if (is_time_chart) {
+                chart_options['scales'] = {
+                    xAxes: [{
+                        type: "time",
+                        display: true,
+                        scaleLabel: {
+                            display: false,
+                            labelString: 'Date'
+                        },
+                        time: {
+                            tooltipFormat: 'll HH:mm',
+                            displayFormats: {
+                                'millisecond': 'SSS [ms]',
+                                'second': 'mm:ss a',
+                                'minute': 'DD MMM',
+                                'hour': 'ddd h[h]',
+                                'day': 'DD MMM',
+                                'week': 'DD MMM',
+                                'month': 'MMM',
+                                'quarter': 'MMM',
+                                'year': 'YYYY',
+                            }
+                        }
+
+                    }],
+                    yAxes: [{
+                        display: true,
+                        scaleLabel: {
+                            display: false,
+                            labelString: 'value'
+                        }
+                    }]
+                };
+            }
+
+            // global object for the options
+            var chart_model =
+                {
+                    type: 'line',
+                    options: chart_options,
+                    data: {
+                        labels: dictToArray(data.labels, 1),
+                        datasets: chart_datasets,
+                    }
+                };
+
+            // saves the previous charts to be destroyed
+            var prev_chart = content.children();
+            
+            // creates a blank canvas element and attach it to the DOM
+            var canvas = $("<canvas>");
+            content.append(canvas);
+
+            // create the chart
+            var chart = new Chart(canvas, chart_model);
+            
+            // clean
+            prev_chart.remove();
+        }
+        
+        // initialize the interface
+        function initialize (data) {
+            // creates the bar with the buttons
+            buttons = $("<div>",
+                        {class: "btn-group btn-group-justified",
+                         role: "group",
+                         "aria-label": "select-period"});
+
+            var to_click;
+            var context = dictToArray(data.stats);
+            
+            for (var i = 0; i < context.length; i++) {
+                // creates the button
+                var btn_wrapper = $("<div>",
+                                    {class: "btn-group",
+                                     role:"group"});
+                var btn = $("<button>",
+                            {class: "btn btn-primary",
+                             type: "button"})
+                    .text(context[i].label)
+                    .prop("stats_target_url", context[i].url)
+                    .on("click", showStats);
+
+                // saves the default option to select
+                if (i == data.default_stat || i == 0)
+                    to_click = btn;
+
+                // append the elements to the parent
+                btn_wrapper.append(btn);
+                buttons.append(btn_wrapper);
+            }
+
+            // appends the contents to the DOM
+            element.append(buttons);
+            element.append(content);
+
+            // shows the default chart
+            to_click.click();
+        };
+
+        // constructor
+        (function () {
+            $.getJSON(url + "?format=json", initialize);
+        })();
+    };
+})(jQuery);
diff --git a/kfet/statistic.py b/kfet/statistic.py
index e3c89a6d..09f9e935 100644
--- a/kfet/statistic.py
+++ b/kfet/statistic.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 from django.utils import timezone
+from django.db.models import Sum
 
+KFET_WAKES_UP_AT = 7
 
 # donne le nom des jours d'une liste de dates
 # dans un dico ordonné
@@ -28,6 +30,7 @@ def monthnames(dates):
         names[i] = dates[i].strftime("%B")
     return names
 
+
 # rend les dates des nb derniers jours
 # dans l'ordre chronologique
 # aujourd'hui compris
@@ -55,11 +58,12 @@ def lastmonths(nb):
     this_year = first_month_day.year
     this_month = first_month_day.month
     for i in range(1, nb+1):
-        month = ((this_month - 1  - (nb - i)) % 12) + 1
+        month = ((this_month - 1 - (nb - i)) % 12) + 1
         year = this_year + (nb - i) // 12
         first_days[i] = timezone.datetime(year=year,
                                           month=month,
-                                          day=1)
+                                          day=1,
+                                          hour=KFET_WAKES_UP_AT)
     return first_days
 
 
@@ -67,7 +71,8 @@ def this_first_month_day():
     now = timezone.now()
     first_day = timezone.datetime(year=now.year,
                                   month=now.month,
-                                  day=1)
+                                  day=1,
+                                  hour=KFET_WAKES_UP_AT)
     return first_day
 
 
@@ -76,7 +81,8 @@ def this_monday_morning():
     monday = now - timezone.timedelta(days=now.isoweekday()-1)
     monday_morning = timezone.datetime(year=monday.year,
                                        month=monday.month,
-                                       day=monday.day)
+                                       day=monday.day,
+                                       hour=KFET_WAKES_UP_AT)
     return monday_morning
 
 
@@ -84,14 +90,13 @@ def this_morning():
     now = timezone.now()
     morning = timezone.datetime(year=now.year,
                                 month=now.month,
-                                day=now.day)
+                                day=now.day,
+                                hour=KFET_WAKES_UP_AT)
     return morning
 
 
 # Étant donné un queryset d'operations
 # rend la somme des article_nb
 def tot_ventes(queryset):
-    res = 0
-    for op in queryset:
-        res += op.article_nb
-    return res
+    res = queryset.aggregate(Sum('article_nb'))['article_nb__sum']
+    return res and res or 0
diff --git a/kfet/templates/kfet/account_read.html b/kfet/templates/kfet/account_read.html
index 353c504c..50ab7f20 100644
--- a/kfet/templates/kfet/account_read.html
+++ b/kfet/templates/kfet/account_read.html
@@ -14,14 +14,12 @@
 <script type="text/javascript" src="{% static 'kfet/js/Chart.bundle.js' %}"></script>
 <script type="text/javascript" src="{% static 'kfet/js/statistic.js' %}"></script>
 <script>
-jQuery(document).ready(function() {
-    var stat_last = $("#stat_last");
-    var stat_balance = $("#stat_balance");
-    var stat_last_url = "{% url 'kfet.account.stat.last' trigramme=account.trigramme %}";
-    var stat_balance_url = "{% url 'kfet.account.stat.balance' trigramme=account.trigramme %}";
-    STAT.get_thing(stat_last_url, stat_last, "Stat non trouvées :(");
-    STAT.get_thing(stat_balance_url, stat_balance, "Stat non trouvées :(");
-});
+ jQuery(document).ready(function() {
+     var stat_last = new StatsGroup("{% url 'kfet.account.stat.last' trigramme=account.trigramme %}",
+                                    $("#stat_last"));
+     var stat_balance = new StatsGroup("{% url 'kfet.account.stat.balance' trigramme=account.trigramme %}",
+                                       $("#stat_balance"));
+ });
 </script>
 {% endif %}
 {% endblock %}
diff --git a/kfet/templates/kfet/account_stat_balance.html b/kfet/templates/kfet/account_stat_balance.html
deleted file mode 100644
index 4d297a21..00000000
--- a/kfet/templates/kfet/account_stat_balance.html
+++ /dev/null
@@ -1,91 +0,0 @@
-<!doctype html>
-{% load dictionary_extras %}
-
-<body>
-    <canvas id="{{ chart_id }}" height="100"></canvas>
-    {% comment %}
-    <ul>
-    {% for change in changes %}
-        <li>
-            {{ change | get_item:'label'}}
-            | {{ change | get_item:'at'}}
-            | ({{ change | get_item:'amount'}})
-            | balance {{ change | get_item:'balance'}}
-        </li>
-    {% endfor %}
-    </ul>
-    {% endcomment %}
-
-<script>
-jQuery(document).ready(function() {
-    var ctx1 = $({{ chart_id }});
-    var myChart = new Chart(ctx1, {
-	type: 'line',
-	data: {
-	    datasets: [{
-		label: 'Balance',
-                borderColor: 'rgb(255, 99, 132)',
-                backgroundColor: 'rgba(255, 99, 132, 0.5)',
-		data: [
-                    {% for change in changes %}
-                    {
-                        x: new Date("{{ change | get_item:'at'}}"),
-                        y: {{ change | get_item:'balance'| stringformat:"f" }},
-                        label: "{{change|get_item:'label'}}"
-                    }{% if not forloop.last %}, {% endif %} 
-                    {% endfor %}
-                ],
-                fill: true,
-                steppedLine: true,
-                lineTension: 0,
-	    }]
-	},
-	options: {
-            responsive: true,
-            tooltips: {
-                mode: 'index',
-                intersect: false,
-            },
-            hover: {
-                mode: 'nearest',
-                intersect: false,
-            },
-            scales: {
-                xAxes: [{
-                    type: "time",
-                    display: true,
-                    scaleLabel: {
-                            display: false,
-                            labelString: 'Date'
-                    },
-                    time: {
-                        tooltipFormat: 'll HH:mm',
-                        min: new Date("{{ min_date }}"),
-                        max: new Date("{{ max_date }}"),
-                        displayFormats: {
-                        'millisecond': 'SSS [ms]',
-                        'second': 'mm:ss a',
-                        'minute': 'DD MMM',
-                        'hour': 'ddd h[h]',
-                        'day': 'DD MMM',
-                        'week': 'DD MMM',
-                        'month': 'MMM',
-                        'quarter': 'MMM',
-                        'year': 'YYYY',
-                        }
-                    }
-
-                }],
-                yAxes: [{
-                    display: true,
-                    scaleLabel: {
-                            display: false,
-                            labelString: 'value'
-                    }
-                }]
-            }
-	}
-    });
-});
-</script>
-</body>
diff --git a/kfet/templates/kfet/account_stat_last.html b/kfet/templates/kfet/account_stat_last.html
deleted file mode 100644
index fe841485..00000000
--- a/kfet/templates/kfet/account_stat_last.html
+++ /dev/null
@@ -1,52 +0,0 @@
-<!doctype html>
-
-<body>
-    <canvas id="{{ chart_id }}" height="100" ></canvas>
-
-<script>
-jQuery(document).ready(function() {
-    var ctx1 = $({{ chart_id }});
-    var myChart = new Chart(ctx1, {
-	type: 'line',
-	data: {
-	    labels: [
-            {% for k,label in labels.items %}
-                {% if forloop.last %}
-                    "{{ label }}"
-                {% else %}
-                    "{{ label }}", 
-                {% endif %}
-            {% endfor %}
-            ],
-	    datasets: [{
-		label: 'Nb items achetés',
-                borderColor: 'rgb(255, 99, 132)',
-                backgroundColor: 'rgb(255, 99, 132)',
-		data: [
-                {% for k,nb in nb_ventes.items %}
-                    {% if forloop.last %}
-                        "{{ nb }}"
-                    {% else %}
-                        "{{ nb }}", 
-                    {% endif %}
-                {% endfor %}
-                ],
-                fill: false,
-                lineTension: 0,
-	    }]
-	},
-	options: {
-            responsive: true,
-            tooltips: {
-                mode: 'index',
-                intersect: false,
-            },
-            hover: {
-                mode: 'nearest',
-                intersect: false,
-            },
-	}
-    });
-});
-</script>
-</body>
diff --git a/kfet/templates/kfet/article_stat_last.html b/kfet/templates/kfet/article_stat_last.html
deleted file mode 100644
index 8b71732f..00000000
--- a/kfet/templates/kfet/article_stat_last.html
+++ /dev/null
@@ -1,82 +0,0 @@
-<!doctype html>
-
-<body>
-    <canvas id="{{ chart_id }}" height="100" ></canvas>
-
-<script>
-jQuery(document).ready(function() {
-    var ctx1 = $({{ chart_id }});
-    var myChart = new Chart(ctx1, {
-	type: 'line',
-	data: {
-	    labels: [
-            {% for k,label in labels.items %}
-                {% if forloop.last %}
-                    "{{ label }}"
-                {% else %}
-                    "{{ label }}", 
-                {% endif %}
-            {% endfor %}
-            ],
-	    datasets: [{
-		label: 'Toutes consommations',
-                borderColor: 'rgb(255, 99, 132)',
-                backgroundColor: 'rgb(255, 99, 132)',
-		data: [
-                {% for k,nb in nb_ventes.items %}
-                    {% if forloop.last %}
-                        "{{ nb }}"
-                    {% else %}
-                        "{{ nb }}", 
-                    {% endif %}
-                {% endfor %}
-                ],
-                fill: false,
-                lineTension: 0,
-            } , {
-		label: 'LIQ',
-                borderColor: 'rgb(54, 162, 235)',
-                backgroundColor: 'rgb(54, 162, 235)',
-		data: [
-                {% for k,nb in nb_liq.items %}
-                    {% if forloop.last %}
-                        "{{ nb }}"
-                    {% else %}
-                        "{{ nb }}", 
-                    {% endif %}
-                {% endfor %}
-                ],
-                fill: false,
-                lineTension: 0,
-            } , {
-		label: 'Comptes K-Fêt',
-                borderColor: 'rgb(255, 205, 86)',
-                backgroundColor: 'rgb(255, 205, 86)',
-		data: [
-                {% for k,nb in nb_accounts.items %}
-                    {% if forloop.last %}
-                        "{{ nb }}"
-                    {% else %}
-                        "{{ nb }}", 
-                    {% endif %}
-                {% endfor %}
-                ],
-                fill: false,
-                lineTension: 0,
-	    }]
-	},
-	options: {
-            responsive: true,
-            tooltips: {
-                mode: 'index',
-                intersect: false,
-            },
-            hover: {
-                mode: 'nearest',
-                intersect: false,
-            },
-	}
-    });
-});
-</script>
-</body>
diff --git a/kfet/templates/kfet/kpsul.html b/kfet/templates/kfet/kpsul.html
index 70cf4ba9..264422f0 100644
--- a/kfet/templates/kfet/kpsul.html
+++ b/kfet/templates/kfet/kpsul.html
@@ -123,6 +123,7 @@
         <div id="article_selection">
           <input type="text" id="article_autocomplete" autocomplete="off">
           <input type="number" id="article_number" step="1" min="1">
+          <span type="stock" id="article_stock"></span>
           <input type="hidden" id="article_id" value="">
         </div>
         <div id="articles_data">
@@ -221,7 +222,7 @@ $(document).ready(function() {
     function displayAccountData() {
         var balance = account_data['trigramme'] != 'LIQ' ? account_data['balance'] : '';
         if (balance != '')
-            balance = amountToUKF(account_data['balance'], account_data['is_cof']);
+            balance = amountToUKF(account_data['balance'], account_data['is_cof'], true);
         var is_cof = account_data['trigramme'] ? account_data['is_cof'] : '';
         if (is_cof !== '')
             is_cof = is_cof ? '<b>COF</b>' : '<b>Non-COF</b>';
@@ -616,7 +617,10 @@ $(document).ready(function() {
         for (var elem in article) {
             article_html.find('.'+elem).text(article[elem])
         }
-        article_html.find('.price').text(amountToUKF(article['price'], false));
+        if (-5 <=  article['stock'] && article['stock'] <= 5) {
+            article_html.addClass('low-stock');
+        }
+        article_html.find('.price').text(amountToUKF(article['price'], false, false)+' UKF');
         var category_html = articles_container
             .find('#data-category-'+article['category_id']);
         if (category_html.length == 0) {
@@ -642,7 +646,7 @@ $(document).ready(function() {
             });
         $after.after(article_html);
         // Pour l'autocomplétion
-        articlesList.push([article['name'],article['id'],article['category_id'],article['price']]);
+        articlesList.push([article['name'],article['id'],article['category_id'],article['price'], article['stock']]);
     }
 
     function getArticles() {
@@ -670,8 +674,9 @@ $(document).ready(function() {
     var articleSelect = $('#article_autocomplete');
     var articleId = $('#article_id');
     var articleNb = $('#article_number');
-    // 8:Backspace|9:Tab|13:Enter|46:DEL|112-117:F1-6|119-123:F8-F12
-    var normalKeys = /^(8|9|13|46|112|113|114|115|116|117|119|120|121|122|123)$/;
+    var articleStock = $('#article_stock');
+    // 8:Backspace|9:Tab|13:Enter|38-40:Arrows|46:DEL|112-117:F1-6|119-123:F8-F12
+    var normalKeys = /^(8|9|13|37|38|39|40|46|112|113|114|115|116|117|119|120|121|122|123)$/;
     var articlesList = [];
 
     function deleteNonMatching(array, str) {
@@ -727,6 +732,7 @@ $(document).ready(function() {
             if (commit) {
                 articleId.val(articlesMatch[0][1]);
                 articleSelect.val(articlesMatch[0][0]);
+                articleStock.text('/'+articlesMatch[0][4]);
                 displayMatchedArticles(articlesList);
                 return true;
             }
@@ -773,10 +779,15 @@ $(document).ready(function() {
         return $article.find('.name').text();
     }
 
+    function getArticleStock($article) {
+        return $article.find('.stock').text();
+    }
+
     // Sélection des articles à la souris/tactile
     articles_container.on('click', '.article', function() {
         articleId.val(getArticleId($(this)));
         articleSelect.val(getArticleName($(this)));
+        articleStock.text('/'+getArticleStock($(this)));
         displayMatchedArticles(articlesList);
         goToArticleNb();
     });
@@ -790,6 +801,7 @@ $(document).ready(function() {
             addPurchase(articleId.val(), articleNb.val());
             articleSelect.val('');
             articleNb.val('');
+            articleStock.text('');
             articleSelect.focus();
             displayMatchedArticles(articlesList);
             return false;
@@ -809,7 +821,7 @@ $(document).ready(function() {
     // Basket
     // -----
 
-    var item_basket_default_html = '<tr><td class="amount"></td><td class="number"></td><td class="name"></td></tr>';
+    var item_basket_default_html = '<tr><td class="amount"></td><td class="number"></td><td ><span class="lowstock glyphicon glyphicon-alert"></span></td><td class="name"></td></tr>';
     var basket_container = $('#basket table');
     var arrowKeys = /^(37|38|39|40)$/;
 
@@ -827,16 +839,39 @@ $(document).ready(function() {
     }
 
     function addPurchase(id, nb) {
-        var amount_euro = amountEuroPurchase(id, nb).toFixed(2);
-        var index = addPurchaseToFormset(article_data[1], nb, amount_euro);
-        article_basket_html = $(item_basket_default_html);
-        article_basket_html
-            .attr('data-opeindex', index)
-            .find('.number').text(nb).end()
-            .find('.name').text(article_data[0]).end()
-            .find('.amount').text(amountToUKF(amount_euro, account_data['is_cof']));
-        basket_container.prepend(article_basket_html);
-        updateBasketRel();
+        var existing = false;
+        formset_container.find('[data-opeindex]').each(function () {
+            var opeindex = $(this).attr('data-opeindex');
+            var article_id = $(this).find('#id_form-'+opeindex+'-article').val();
+            if (article_id == id) {
+                existing = true ;
+                addExistingPurchase(opeindex, nb);
+            }
+        });
+        if (!existing) {
+            var amount_euro = amountEuroPurchase(id, nb).toFixed(2);
+            var index = addPurchaseToFormset(article_data[1], nb, amount_euro);
+            article_basket_html = $(item_basket_default_html);
+            article_basket_html
+                .attr('data-opeindex', index)
+                .find('.number').text('('+nb+'/'+article_data[4]+')').end()
+                .find('.name').text(article_data[0]).end()
+                .find('.amount').text(amountToUKF(amount_euro, account_data['is_cof']), false);
+            basket_container.prepend(article_basket_html);
+            if (is_low_stock(id, nb))
+                article_basket_html.find('.lowstock')
+                                   .show();
+            updateBasketRel();
+        }
+    }
+
+    function is_low_stock(id, nb) {
+        var i = 0 ;
+        while (i<articlesList.length && id != articlesList[i][1]) i++;
+        article_data = articlesList[i];
+
+        stock = article_data[4] ;
+        return (-5 <= stock - nb && stock - nb <= 5); 
     }
 
     function addDeposit(amount, is_checkout=1) {
@@ -848,7 +883,7 @@ $(document).ready(function() {
             .attr('data-opeindex', index)
             .find('.number').text(amount+"€").end()
             .find('.name').text(text).end()
-            .find('.amount').text(amountToUKF(amount, account_data['is_cof']));
+            .find('.amount').text(amountToUKF(amount, account_data['is_cof'], false));
         basket_container.prepend(deposit_basket_html);
         updateBasketRel();
     }
@@ -861,7 +896,7 @@ $(document).ready(function() {
             .attr('data-opeindex', index)
             .find('.number').text(amount+"€").end()
             .find('.name').text('Retrait').end()
-            .find('.amount').text(amountToUKF(amount, account_data['is_cof']));
+            .find('.amount').text(amountToUKF(amount, account_data['is_cof'], false));
         basket_container.prepend(withdraw_basket_html);
         updateBasketRel();
     }
@@ -871,11 +906,25 @@ $(document).ready(function() {
     });
 
     $(document).on('keydown', function (e) {
-        if (e.keyCode == 46) {
-            // DEL (Suppr)
-            basket_container.find('.ui-selected').each(function () {
-                deleteFromBasket($(this).data('opeindex'));
-            });
+        switch(e.which) {
+            case 46:
+                // DEL (Suppr)
+                basket_container.find('.ui-selected').each(function () {
+                    deleteFromBasket($(this).data('opeindex'));
+                });
+                break;
+            case 38:
+                // Arrow up
+                basket_container.find('.ui-selected').each(function () {
+                    addExistingPurchase($(this).data('opeindex'), 1);
+                });
+                break;
+            case 40:
+                // Arrow down
+                basket_container.find('.ui-selected').each(function () {
+                    addExistingPurchase($(this).data('opeindex'), -1);
+                });
+                break;
         }
     });
 
@@ -903,7 +952,7 @@ $(document).ready(function() {
             var amount = $(this).find('#id_form-'+opeindex+'-amount');
             if (!deleted && type == "purchase")
                 amount.val(amountEuroPurchase(article_id, article_nb));
-            basket_container.find('[data-opeindex='+opeindex+'] .amount').text(amountToUKF(amount.val(), account_data['is_cof']));
+            basket_container.find('[data-opeindex='+opeindex+'] .amount').text(amountToUKF(amount.val(), account_data['is_cof'], false));
         });
     }
 
@@ -922,9 +971,9 @@ $(document).ready(function() {
                 basketrel_html += '<div>Sur 20€: '+ (20-amount).toFixed(2) +' €</div>';
         } else if (account_data['trigramme'] != '' && !isBasketEmpty()) {
             var amount = getAmountBasket();
-            var amountUKF = amountToUKF(amount, account_data['is_cof']);
+            var amountUKF = amountToUKF(amount, account_data['is_cof'], false);
             var newBalance = account_data['balance'] + amount;
-            var newBalanceUKF = amountToUKF(newBalance, account_data['is_cof']);
+            var newBalanceUKF = amountToUKF(newBalance, account_data['is_cof'], true);
             basketrel_html += '<div>Total: '+amountUKF+'</div>';
             basketrel_html += '<div>Nouveau solde: '+newBalanceUKF+'</div>';
             if (newBalance < 0)
@@ -939,6 +988,46 @@ $(document).ready(function() {
         updateBasketRel();
     }
 
+    function addExistingPurchase(opeindex, nb) {
+        var type = formset_container.find("#id_form-"+opeindex+"-type").val(); 
+        var id = formset_container.find("#id_form-"+opeindex+"-article").val(); 
+        var nb_before = formset_container.find("#id_form-"+opeindex+"-article_nb").val();
+        var nb_after = parseInt(nb_before) + parseInt(nb);
+        var amountEuro_after = amountEuroPurchase(id, nb_after);
+        var amountUKF_after = amountToUKF(amountEuro_after, account_data['is_cof']);
+
+        if (type == 'purchase') {
+            if (nb_after == 0) {
+                deleteFromBasket(opeindex);
+            } else if (nb_after > 0 && nb_after <= 25) {
+                if (nb_before > 0) {
+                    var article_html = basket_container.find('[data-opeindex='+opeindex+']');
+                    article_html.find('.amount').text(amountUKF_after).end()
+                                .find('.number').text('('+nb_after+'/'+article_data[4]+')').end() ;
+
+                } else {
+                    article_html = $(item_basket_default_html);
+                    article_html
+                        .attr('data-opeindex', opeindex)
+                        .find('.number').text('('+nb_after+'/'+article_data[4]+')').end()
+                        .find('.name').text(article_data[0]).end()
+                        .find('.amount').text(amountUKF_after);
+                    basket_container.prepend(article_basket_html);
+
+                }
+
+                    if (is_low_stock(id, nb_after))
+                        article_html.find('.lowstock')
+                                    .show();
+                    else
+                        article_html.find('.lowstock')
+                                    .hide();
+                updateExistingFormset(opeindex, nb_after, amountEuro_after);
+                updateBasketRel();
+            }
+        }
+    }
+
     function resetBasket() {
         basket_container.find('tr').remove();
         mngmt_total_forms = 1;
@@ -948,6 +1037,7 @@ $(document).ready(function() {
         articleId.val(0);
         articleSelect.val('');
         articleNb.val('');
+        articleStock.text('');
         displayMatchedArticles(articlesList);
     }
 
@@ -959,7 +1049,7 @@ $(document).ready(function() {
         var title = is_checkout ? 'Montant de la charge' : "Montant de l'édition";
         $.confirm({
             title: title,
-            content: '<input type="number" step="0.01" min="0.01" on autofocus placeholder="€">',
+            content: '<input type="number" lang="en" step="0.01" min="0.01" on autofocus placeholder="€">',
             backgroundDismiss: true,
             animation:'top',
             closeAnimation:'bottom',
@@ -986,7 +1076,7 @@ $(document).ready(function() {
     function askWithdraw() {
         $.confirm({
             title: 'Montant du retrait',
-            content: '<input type="number" step="0.01" min="0.01" on autofocus placeholder="€">',
+            content: '<input type="number" lang="en" step="0.01" min="0.01" on autofocus placeholder="€">',
             backgroundDismiss: true,
             animation:'top',
             closeAnimation:'bottom',
@@ -1072,7 +1162,14 @@ $(document).ready(function() {
     }
 
     function deleteFromFormset(opeindex) {
-        formset_container.find('#id_form-'+opeindex+'-DELETE').prop('checked', true);
+        updateExistingFormset(opeindex, 0, '0.00');
+    }
+
+    function updateExistingFormset(opeindex, nb, amount) {
+        formset_container
+            .find('#id_form-'+opeindex+'-amount').val((parseFloat(amount)).toFixed(2)).end()
+            .find('#id_form-'+opeindex+'-article_nb').val(nb).end()
+            .find('#id_form-'+opeindex+'-DELETE').prop('checked', !nb);
     }
 
     // -----
@@ -1164,7 +1261,7 @@ $(document).ready(function() {
     function askAddcost(errors = '') {
         $.confirm({
             title: 'Majoration',
-            content: errors + '<input type="text" placeholder="Trigramme" autocomplete="off" name="trigramme" spellcheck="false" style="text-transform:uppercase" autofocus><input type="number" step="0.01" min="0.01" placeholder="€" name="amount">',
+            content: errors + '<input type="text" placeholder="Trigramme" autocomplete="off" name="trigramme" spellcheck="false" style="text-transform:uppercase" autofocus><input type="number" lang="en" step="0.01" min="0.01" placeholder="€" name="amount">',
             backgroundDismiss: true,
             animation:'top',
             closeAnimation:'bottom',
@@ -1251,7 +1348,9 @@ $(document).ready(function() {
         }
         for (var i=0; i<data['articles'].length; i++) {
             article = data['articles'][i];
-            articles_container.find('[data-article='+article['id']+'] .stock')
+            articles_container.find('#data-article-'+article['id'])
+                .addClass('low-stock');
+            articles_container.find('#data-article-'+article['id']+' .stock')
                 .text(article['stock']);
         }
         if (data['addcost']) {
diff --git a/kfet/templates/kfet/object_stat_resume.html b/kfet/templates/kfet/object_stat_resume.html
deleted file mode 100644
index 5dba9171..00000000
--- a/kfet/templates/kfet/object_stat_resume.html
+++ /dev/null
@@ -1,35 +0,0 @@
-<!doctype html>
-{% load staticfiles %}
-{% load dictionary_extras %}
-<body>
-    <div class="btn-group btn-group-justified" role="group" aria-label="select-period">
-        {% for k,stat in stats.items %}
-        <div class="btn-group" role="group">
-            <button id="{{ stat | get_item:'btn' }}" type="button" class="btn btn-primary {{ id_prefix }}-btn {%if k == default_stat%} focus{%endif%}">{{ stat | get_item:'label' }}</button>
-        </div>
-        {% endfor %}
-    </div><!-- /boutons --> 
-    <div id="{{ content_id}}">
-    </div>
-    <script>
-    jQuery(document).ready(function() {
-        // VARIABLES
-        {{id_prefix}}_content_id = $("#{{content_id}}");
-        {{id_prefix}}_btns = $(".{{id_prefix}}-btn");
-        {% for k,stat in stats.items %}
-        {% if k == default_stat %}
-        {{id_prefix}}_default_url = "{{ stat | get_item:'url' }}";
-        {% endif %}
-        {% endfor %}
-        // INIT
-        STAT.get_thing({{id_prefix}}_default_url, {{id_prefix}}_content_id, "Ouppss ?"); 
-        {% for k,stat in stats.items %}
-        $("#{{stat|get_item:'btn'}}").on('click', function() {
-            STAT.get_thing("{{stat|get_item:'url'}}", {{id_prefix}}_content_id, "Ouuups ?");
-            {{id_prefix}}_btns.removeClass("focus");
-            $("#{{stat|get_item:'btn'}}").addClass("focus");
-        });
-        {% endfor %}
-    });
-    </script>
-</body>
diff --git a/kfet/templatetags/kfet_tags.py b/kfet/templatetags/kfet_tags.py
index 59840b27..3b1bb639 100644
--- a/kfet/templatetags/kfet_tags.py
+++ b/kfet/templatetags/kfet_tags.py
@@ -41,5 +41,4 @@ def highlight_clipper(clipper, q):
 @register.filter()
 def ukf(balance, is_cof):
     grant = is_cof and (1 + Settings.SUBVENTION_COF() / 100) or 1
-    # float nécessaire car sinon problème avec le round de future.builtins
-    return floor(float(balance) * 10 * grant)
+    return floor(balance * 10 * grant)
diff --git a/kfet/tests.py b/kfet/tests.py
index 98558001..5bea7afa 100644
--- a/kfet/tests.py
+++ b/kfet/tests.py
@@ -2,143 +2,4 @@
 
 from django.test import TestCase
 
-from kfet.models import Account
-from gestioncof.models import CofProfile, User
-
-
-
-names = ['Abelardus',
-          'Abrahamus',
-          'Acacius',
-          'Accius',
-          'Achaicus',
-          'Achill',
-          'Achilles',
-          'Achilleus',
-          'Acrisius',
-          'Actaeon',
-          'Acteon',
-          'Adalricus',
-          'Adelfonsus',
-          'Adelphus',
-          'Adeodatus',
-          'Adolfus',
-          'Adolphus',
-          'Adrastus',
-          'Adrianus',
-          'Ægidius',
-          'Ælia',
-          'Ælianus',
-          'Æmilianus',
-          'Æmilius',
-          'Aeneas',
-          'Æolus',
-          'Æschylus',
-          'Æson',
-          'Æsop',
-          'Æther',
-          'Ætius',
-          'Agapetus',
-          'Agapitus',
-          'Agapius',
-          'Agathangelus',
-          'Aigidius',
-          'Aiolus',
-          'Ajax',
-          'Alair',
-          'Alaricus',
-          'Albanus',
-          'Alberic',
-          'Albericus',
-          'Albertus',
-          'Albinus',
-          'Albus',
-          'Alcaeus',
-          'Alcander',
-          'Alcimus',
-          'Alcinder',
-          'Alerio',
-          'Alexandrus',
-          'Alexis',
-          'Alexius',
-          'Alexus',
-          'Alfonsus',
-          'Alfredus',
-          'Almericus',
-          'Aloisius',
-          'Aloysius',
-          'Alphaeus',
-          'Alpheaus',
-          'Alpheus',
-          'Alphoeus',
-          'Alphonsus',
-          'Alphonzus',
-          'Alvinius',
-          'Alvredus',
-          'Amadeus',
-          'Amaliricus',
-          'Amandus',
-          'Amantius',
-          'Amarandus',
-          'Amaranthus',
-          'Amatus',
-          'Ambrosianus',
-          'Ambrosius',
-          'Amedeus',
-          'Americus',
-          'Amlethus',
-          'Amletus',
-          'Amor',
-          'Ampelius',
-          'Amphion',
-          'Anacletus',
-          'Anastasius',
-          'Anastatius',
-          'Anastius',
-          'Anatolius',
-          'Androcles',
-          'Andronicus',
-          'Anencletus',
-          'Angelicus',
-          'Angelus',
-          'Anicetus',
-          'Antigonus',
-          'Antipater',
-          'Antoninus',
-          'Antonius',
-          'Aphrodisius',
-          'Apollinaris']
-
-
-# Ne pas supprimer, peut être utile pour regénérer 
-# d'autres fixtures à l'avenir
-class TestFoo(TestCase):
-    fixtures = ['users', 'sites', 'gestion', 'articles']
-
-    def test_foo(self):
-        pass
-        # for name in names:
-        #     user = User(username=name,
-        #                 last_name='Romain',
-        #                 first_name=name)
-        #     user.email = '{}.{}@ens.fr'.format(user.first_name, user.last_name)
-        #     user.save()
-
-        # galois_trigrammes = map('{:03d}'.format, range(40))
-        # galois = CofProfile.objects.filter(user__last_name='Gaulois')
-
-        # romains_trigrammes = map(lambda x: str(100+x), range(40))
-        # romains = CofProfile.objects.filter(user__last_name='Romain')
-
-        # for t, c in zip(galois_trigrammes, galois):
-        #     Account.objects.create(cofprofile=c, trigramme=t)
-        # for t, c in zip(romains_trigrammes, romains):
-        #     Account.objects.create(cofprofile=c, trigramme=t)
-
-
-# class TestBar(TestCase):
-#     fixtures = ['users', 'sites', 'gestion', 'articles', 'groups', 'accounts']
-
-
-#     def test_foo(self):
-#         pass
+# Écrire les tests ici
diff --git a/kfet/views.py b/kfet/views.py
index ac885675..7ba37f55 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -1,37 +1,49 @@
 # -*- coding: utf-8 -*-
 
 from django.shortcuts import render, get_object_or_404, redirect
-from django.core.exceptions import PermissionDenied, ValidationError
+from django.core.exceptions import PermissionDenied
 from django.core.cache import cache
 from django.views.generic import ListView, DetailView, TemplateView
 from django.views.generic.list import BaseListView, MultipleObjectTemplateResponseMixin
 from django.views.generic.detail import BaseDetailView, SingleObjectTemplateResponseMixin
 from django.views.generic.edit import CreateView, UpdateView, DeleteView, FormView
-from django.core.urlresolvers import reverse_lazy
+from django.core.urlresolvers import reverse, reverse_lazy
 from django.contrib import messages
 from django.contrib.messages.views import SuccessMessageMixin
 from django.contrib.auth import authenticate, login
 from django.contrib.auth.decorators import login_required, permission_required
 from django.contrib.auth.models import User, Permission, Group
-from django.http import HttpResponse, JsonResponse, Http404
-from django.forms import modelformset_factory, formset_factory
-from django.db import IntegrityError, transaction
-from django.db.models import F, Sum, Prefetch, Count, Func
+from django.http import JsonResponse, Http404
+from django.forms import formset_factory
+from django.db import transaction
+from django.db.models import F, Sum, Prefetch, Count
 from django.db.models.functions import Coalesce
 from django.utils import timezone
 from django.utils.crypto import get_random_string
 from django.utils.decorators import method_decorator
 from gestioncof.models import CofProfile, Clipper
 from kfet.decorators import teamkfet_required
-from kfet.models import (Account, Checkout, Article, Settings, AccountNegative,
+from kfet.models import (
+    Account, Checkout, Article, Settings, AccountNegative,
     CheckoutStatement, GenericTeamToken, Supplier, SupplierArticle, Inventory,
-    InventoryArticle, Order, OrderArticle, Operation, OperationGroup, Transfer)
-from kfet.forms import *
+    InventoryArticle, Order, OrderArticle, Operation, OperationGroup,
+    TransferGroup, Transfer)
+from kfet.forms import (
+    AccountTriForm, AccountBalanceForm, AccountNoTriForm, UserForm, CofForm,
+    UserRestrictTeamForm, UserGroupForm, AccountForm, CofRestrictForm,
+    AccountPwdForm, AccountNegativeForm, UserRestrictForm, AccountRestrictForm,
+    GroupForm, CheckoutForm, CheckoutRestrictForm, CheckoutStatementCreateForm,
+    CheckoutStatementUpdateForm, ArticleForm, ArticleRestrictForm,
+    KPsulOperationGroupForm, KPsulAccountForm, KPsulCheckoutForm,
+    KPsulOperationFormSet, AddcostForm, FilterHistoryForm, SettingsForm,
+    TransferFormSet, InventoryArticleForm, OrderArticleForm,
+    OrderArticleToInventoryForm
+    )
 from collections import defaultdict
 from kfet import consumers
 from datetime import timedelta
+from decimal import Decimal
 import django_cas_ng
-import hashlib
 import heapq
 import statistics
 from .statistic import daynames, monthnames, weeknames, \
@@ -54,6 +66,7 @@ class Home(TemplateView):
     def dispatch(self, *args, **kwargs):
         return super(TemplateView, self).dispatch(*args, **kwargs)
 
+
 @teamkfet_required
 def login_genericteam(request):
     # Check si besoin de déconnecter l'utilisateur de CAS
@@ -359,6 +372,7 @@ def account_read(request, trigramme):
 
 # Account - Update
 
+
 @login_required
 def account_update(request, trigramme):
     account = get_object_or_404(Account, trigramme=trigramme)
@@ -369,39 +383,43 @@ def account_update(request, trigramme):
         raise PermissionDenied
 
     if request.user.has_perm('kfet.is_team'):
-        user_form    = UserRestrictTeamForm(instance=account.user)
-        group_form   = UserGroupForm(instance=account.user)
+        user_form = UserRestrictTeamForm(instance=account.user)
+        group_form = UserGroupForm(instance=account.user)
         account_form = AccountForm(instance=account)
-        cof_form     = CofRestrictForm(instance=account.cofprofile)
-        pwd_form     = AccountPwdForm()
+        cof_form = CofRestrictForm(instance=account.cofprofile)
+        pwd_form = AccountPwdForm()
         if account.balance < 0 and not hasattr(account, 'negative'):
-            AccountNegative.objects.create(account=account, start=timezone.now())
+            AccountNegative.objects.create(account=account,
+                                           start=timezone.now())
             account.refresh_from_db()
         if hasattr(account, 'negative'):
             negative_form = AccountNegativeForm(instance=account.negative)
         else:
             negative_form = None
     else:
-        user_form    = UserRestrictForm(instance=account.user)
+        user_form = UserRestrictForm(instance=account.user)
         account_form = AccountRestrictForm(instance=account)
-        cof_form     = None
-        group_form   = None
+        cof_form = None
+        group_form = None
         negative_form = None
-        pwd_form     = None
+        pwd_form = None
 
     if request.method == "POST":
         # Update attempt
-        success      = False
+        success = False
         missing_perm = True
 
         if request.user.has_perm('kfet.is_team'):
             account_form = AccountForm(request.POST, instance=account)
-            cof_form     = CofRestrictForm(request.POST, instance=account.cofprofile)
-            user_form    = UserRestrictTeamForm(request.POST, instance=account.user)
-            group_form   = UserGroupForm(request.POST, instance=account.user)
-            pwd_form     = AccountPwdForm(request.POST)
+            cof_form = CofRestrictForm(request.POST,
+                                       instance=account.cofprofile)
+            user_form = UserRestrictTeamForm(request.POST,
+                                             instance=account.user)
+            group_form = UserGroupForm(request.POST, instance=account.user)
+            pwd_form = AccountPwdForm(request.POST)
             if hasattr(account, 'negative'):
-                negative_form = AccountNegativeForm(request.POST, instance=account.negative)
+                negative_form = AccountNegativeForm(request.POST,
+                                                    instance=account.negative)
 
             if (request.user.has_perm('kfet.change_account')
                     and account_form.is_valid() and cof_form.is_valid()
@@ -413,15 +431,14 @@ def account_update(request, trigramme):
                 put_cleaned_data_in_dict(data, cof_form)
 
                 # Updating
-                account_form.save(data = data)
+                account_form.save(data=data)
 
                 # Checking perm to update password
                 if (request.user.has_perm('kfet.change_account_password')
                         and pwd_form.is_valid()):
                     pwd = pwd_form.cleaned_data['pwd1']
-                    pwd_sha256 = hashlib.sha256(pwd.encode('utf-8')).hexdigest()
-                    Account.objects.filter(pk=account.pk).update(
-                            password = pwd_sha256)
+                    account.change_pwd(pwd)
+                    account.save()
                     messages.success(request, 'Mot de passe mis à jour')
 
                 # Checking perm to manage perms
@@ -435,49 +452,66 @@ def account_update(request, trigramme):
                     if account.negative.balance_offset:
                         balance_offset_old = account.negative.balance_offset
                 if (hasattr(account, 'negative')
-                        and request.user.has_perm('kfet.change_accountnegative')
+                    and request.user.has_perm('kfet.change_accountnegative')
                         and negative_form.is_valid()):
-                    balance_offset_new = negative_form.cleaned_data['balance_offset']
+                    balance_offset_new = \
+                            negative_form.cleaned_data['balance_offset']
                     if not balance_offset_new:
                         balance_offset_new = 0
-                    balance_offset_diff = balance_offset_new - balance_offset_old
+                    balance_offset_diff = (balance_offset_new
+                                           - balance_offset_old)
                     Account.objects.filter(pk=account.pk).update(
-                        balance = F('balance') + balance_offset_diff)
+                        balance=F('balance') + balance_offset_diff)
                     negative_form.save()
-                    if not balance_offset_new and Account.objects.get(pk=account.pk).balance >= 0:
+                    if Account.objects.get(pk=account.pk).balance >= 0 \
+                            and not balance_offset_new:
                         AccountNegative.objects.get(account=account).delete()
 
                 success = True
-                messages.success(request,
-                    'Informations du compte %s mises à jour' % account.trigramme)
+                messages.success(
+                    request,
+                    'Informations du compte %s mises à jour'
+                    % account.trigramme)
 
+        # Modification de ses propres informations
         if request.user == account.user:
             missing_perm = False
             account.refresh_from_db()
             user_form = UserRestrictForm(request.POST, instance=account.user)
             account_form = AccountRestrictForm(request.POST, instance=account)
+            pwd_form = AccountPwdForm(request.POST)
 
             if user_form.is_valid() and account_form.is_valid():
                 user_form.save()
                 account_form.save()
                 success = True
-                messages.success(request, 'Vos informations ont été mises à jour')
+                messages.success(request,
+                                 'Vos informations ont été mises à jour')
+
+                if request.user.has_perm('kfet.is_team') \
+                        and pwd_form.is_valid():
+                    pwd = pwd_form.cleaned_data['pwd1']
+                    account.change_pwd(pwd)
+                    account.save()
+                    messages.success(
+                            request, 'Votre mot de passe a été mis à jour')
 
         if missing_perm:
             messages.error(request, 'Permission refusée')
         if success:
             return redirect('kfet.account.read', account.trigramme)
         else:
-            messages.error(request, 'Informations non mises à jour. Corrigez les erreurs')
+            messages.error(
+                request, 'Informations non mises à jour. Corrigez les erreurs')
 
     return render(request, "kfet/account_update.html", {
-        'account'      : account,
-        'account_form' : account_form,
-        'cof_form'     : cof_form,
-        'user_form'    : user_form,
-        'group_form'   : group_form,
+        'account': account,
+        'account_form': account_form,
+        'cof_form': cof_form,
+        'user_form': user_form,
+        'group_form': group_form,
         'negative_form': negative_form,
-        'pwd_form'     : pwd_form,
+        'pwd_form': pwd_form,
     })
 
 @permission_required('kfet.manage_perms')
@@ -1703,6 +1737,7 @@ def order_create(request, pk):
 
     articles = (Article.objects
             .filter(suppliers=supplier.pk)
+            .distinct()
             .select_related('category')
             .order_by('category__name', 'name'))
 
@@ -1993,6 +2028,14 @@ class JSONResponseMixin(object):
         return context
 
 
+class JSONDetailView(JSONResponseMixin,
+                     BaseDetailView):
+    """
+    Returns a DetailView that renders a JSON
+    """
+    def render_to_response(self, context):
+        return self.render_to_json_response(context)
+
 class HybridDetailView(JSONResponseMixin,
                        SingleObjectTemplateResponseMixin,
                        BaseDetailView):
@@ -2023,14 +2066,13 @@ class HybridListView(JSONResponseMixin,
             return super(HybridListView, self).render_to_response(context)
 
 
-class ObjectResumeStat(DetailView):
+class ObjectResumeStat(JSONDetailView):
     """
     Summarize all the stats of an object
-    DOES NOT RETURN A JSON RESPONSE
+    Handles JSONResponse
     """
-    template_name = 'kfet/object_stat_resume.html'
     context_object_name = ''
-    id_prefix = 'id_a_definir'
+    id_prefix = ''
     # nombre de vues à résumer
     nb_stat = 2
     # Le combienième est celui par defaut ?
@@ -2059,7 +2101,7 @@ class ObjectResumeStat(DetailView):
                 'btn': "btn_%s_%d_%d" % (self.id_prefix,
                                          object_id,
                                          i),
-                'url': reverse_lazy(self.stat_urls[i],
+                'url': reverse(self.stat_urls[i],
                                     kwargs=dict(
                                         self.get_object_url_kwargs(),
                                         **url_kwargs[i]
@@ -2082,7 +2124,7 @@ ID_PREFIX_ACC_BALANCE = "balance_acc"
 
 
 # Un résumé de toutes les vues ArticleStatBalance
-# NE REND PAS DE JSON
+# REND DU JSON
 class AccountStatBalanceAll(ObjectResumeStat):
     model = Account
     context_object_name = 'account'
@@ -2115,9 +2157,9 @@ class AccountStatBalanceAll(ObjectResumeStat):
         return super(AccountStatBalanceAll, self).dispatch(*args, **kwargs)
 
 
-class AccountStatBalance(HybridDetailView):
+class AccountStatBalance(JSONDetailView):
     """
-    Returns a graph (or a JSON Response) of the evolution a the personnal
+    Returns a JSON containing the evolution a the personnal
     balance of a trigramme between timezone.now() and `nb_days`
     ago (specified to the view as an argument)
     takes into account the Operations and the Transfers
@@ -2126,7 +2168,6 @@ class AccountStatBalance(HybridDetailView):
     model = Account
     trigramme_url_kwarg = 'trigramme'
     nb_date_url_kwargs = 'nb_date'
-    template_name = 'kfet/account_stat_balance.html'
     context_object_name = 'account'
     id_prefix = ""
 
@@ -2233,10 +2274,10 @@ class AccountStatBalance(HybridDetailView):
             nb_days_string = 'anytime'
         else:
             nb_days_string = str(int(nb_days))
-        context['changes'] = changes
-        context['chart_id'] = "%s_%s_%s_days" % (self.id_prefix,
-                                                 self.object.id,
-                                                 nb_days_string)
+        context['charts'] = [ { "color": "rgb(255, 99, 132)",
+                                "label": "Balance",
+                                "values": changes } ]
+        context['is_time_chart'] = True
         context['min_date'] = changes[len(changes)-1]['at']
         context['max_date'] = changes[0]['at']
         # TODO: offset
@@ -2282,14 +2323,13 @@ class AccountStatLastAll(ObjectResumeStat):
         return super(AccountStatLastAll, self).dispatch(*args, **kwargs)
 
 
-class AccountStatLast(HybridDetailView):
+class AccountStatLast(JSONDetailView):
     """
-    Returns a graph (or a JSON Response) of the evolution a the personnal
+    Returns a JSON containing the evolution a the personnal
     consommation of a trigramme at the diffent dates specified
     """
     model = Account
     trigramme_url_kwarg = 'trigramme'
-    template_name = 'kfet/account_stat_last.html'
     context_object_name = 'account'
     end_date = timezone.now()
     id_prefix = ""
@@ -2341,10 +2381,9 @@ class AccountStatLast(HybridDetailView):
         operations = self.sort_operations()
         for i in operations:
             nb_ventes[i] = tot_ventes(operations[i])
-        context['nb_ventes'] = nb_ventes
-        # ID unique
-        context['chart_id'] = "%s_%d" % (self.id_prefix,
-                                         self.object.id)
+        context['charts'] = [ { "color": "rgb(255, 99, 132)",
+                                "label": "NB items achetés",
+                                "values": nb_ventes } ]
         return context
 
     @method_decorator(login_required)
@@ -2421,13 +2460,12 @@ class ArticleStatLastAll(ObjectResumeStat):
         return super(ArticleStatLastAll, self).dispatch(*args, **kwargs)
 
 
-class ArticleStatLast(HybridDetailView):
+class ArticleStatLast(JSONDetailView):
     """
-    Returns a graph (or a JSON Response) of the consommation
+    Returns a JSON containing the consommation
     of an article at the diffent dates precised
     """
     model = Article
-    template_name = 'kfet/article_stat_last.html'
     context_object_name = 'article'
     end_date = timezone.now()
     id_prefix = ""
@@ -2488,12 +2526,15 @@ class ArticleStatLast(HybridDetailView):
                         operations[i]
                         .exclude(group__on_acc__trigramme='LIQ')
                         )
-        context['nb_ventes'] = nb_ventes
-        context['nb_accounts'] = nb_accounts
-        context['nb_liq'] = nb_liq
-        # ID unique
-        context['chart_id'] = "%s_%d" % (self.id_prefix,
-                                         self.object.id)
+        context['charts'] = [ { "color": "rgb(255, 99, 132)",
+                                "label": "Toutes consommations",
+                                "values": nb_ventes },
+                              { "color": "rgb(54, 162, 235)",
+                                "label": "LIQ",
+                                "values": nb_liq },
+                              { "color": "rgb(255, 205, 86)",
+                                "label": "Comptes K-Fêt",
+                                "values": nb_accounts } ]
         return context
 
     @method_decorator(login_required)