Upgrading Font Awesome vendor files from 3.2.1 to 4.2.0

* updating vendor files
* updating class syntax (to new FA-based classes) for all UI elements
* correcting broken tests

cms/templates/group_configurations.html

@@ -37,7 +37,7 @@
         <h3 class="sr">${_("Page Actions")}</h3>
         <ul>
           <li class="nav-item">
-            <a href="#" class="button new-button"><i class="icon-plus"></i> ${_("New Group Configuration")}</a>
+            <a href="#" class="button new-button"><i class="icon fa fa-plus"></i> ${_("New Group Configuration")}</a>
           </li>
         </ul>
       </nav>
@@ -55,7 +55,7 @@
         </div>
       % else:
         <div class="ui-loading">
-            <p><span class="spin"><i class="icon-refresh"></i></span> <span class="copy">${_("Loading")}</span></p>
+            <p><span class="spin"><i class="icon fa fa-refresh"></i></span> <span class="copy">${_("Loading")}</span></p>
         </div>
       % endif
       </article>