Fix api call on new transfers

- Use django-js-reverse
- Replace old url (deleted) with standard url

kfet/templates/kfet/transfers_create.html

@@ -4,6 +4,7 @@
 {% block extra_head %}
 <link rel="stylesheet" type="text/css" href="{% static 'kfet/css/transfers_form.css' %}">
 <script type="text/javascript" src="{% static 'kfet/js/js.cookie.js' %}"></script>
+<script type="text/javascript" src="{% url 'js_reverse' %}"></script>
 {% endblock %}
 
 {% block title %}Nouveaux transferts{% endblock %}
@@ -51,14 +52,12 @@
 
 <script type="text/javascript">
 $(document).ready(function () {
-    function getAccountData(trigramme, callback = function() {}) {
-        $.ajax({
-            dataType: "json",
-            url     : "{% url 'kfet.account.read.json' %}",
-            method  : "POST",
-            data    : { trigramme: trigramme },
-            success : callback,
-        });
+    function getAccountData(trigramme, callback) {
+        callback = callback || $.noop;
+        $.getJSON(Urls['kfet.account.read'](trigramme), {
+            'format': 'json',
+        })
+        .done(callback);
     }
 
     function updateAccountData(trigramme, $input) {