Changed double list controls to font awesome

Author: pakaufmann

Resources/views/Form/DoubleList/controls.html.twig

@@ -2,7 +2,7 @@
 
 <div class="double-list-controls">
     <div class="btn-group btn-group-vertical">
-        <button type="button" class="btn btn-large unselect"><i class="icon-chevron-left icon-large"></i></button>
-        <button type="button" class="btn btn-large select"><i class="icon-chevron-right icon-large"></i></button>
+        <button type="button" class="btn btn-large unselect"><i class="fa fa-chevron-left icon-large"></i></button>
+        <button type="button" class="btn btn-large select"><i class="fa fa-chevron-right icon-large"></i></button>
     </div>
-</div>
+</div>