trie par lastname (ref #237)

src/ninegate-1.0/src/Cadoles/WebsocketBundle/Resources/views/Chat/client.html.twig

@@ -196,7 +196,7 @@
                         <label class="control-label required">Destinataires<span class="mandatory">*</span></label>
 
                         <select id="destinataires" style="width:100%" name="states[]" multiple="multiple">
-                            {% for user in group.users %}
+                            {% for user in group.users |sort((a, b) => a.user.lastname <=> b.user.lastname) %} %}
                                 {%if(user.user!=app.user)%}
                                     <option value="{{user.user.email}}" data-image="\{{alias}}\uploads\avatar\{{user.user.avatar}}">{{user.user.lastname}} {{user.user.firstname}}</option>
                                 {%endif%}