Introduce placeholder pages for home and write_article

mainsite/templates/mainsite/homepage.html

@@ -0,0 +1,5 @@
+{% extends "base.html" %}
+
+{% block content %}
+<h1>Imma website!</h1>
+{% endblock content %}

mainsite/templates/mainsite/write_article.html

@@ -0,0 +1,5 @@
+{% extends "base.html" %}
+
+{% block content %}
+<h1>Plz send articlez!</h1>
+{% endblock content %}

mainsite/templates/sidebar.html

@@ -1,13 +1,13 @@
 <div id="sidebar" class="col-sm-3 col-md-2 sidebar collapse">
   <ul class="nav nav-sidebar">
     <li>
-      <a href="#">
+      <a href="{% url "homepage" %}">
         <i class="fa fa-home" aria-hidden="true"></i> Accueil
       </a>
     </li>
 
     <li>
-      <a href="#">
+      <a href="{% url "write_article" %}">
         <i class="fa fa-pencil" aria-hidden="true"></i> Écrire un article
       </a>
     </li>