glyphicons replaced with font awesome

comic/templates/comic/comic_list.html

@@ -16,7 +16,7 @@
         <thead>
         <tr>
             <th id="select-all"><input type="checkbox" id="select-all-cb"></th>
-            <th><center><span class="glyphicon glyphicon-file"></span></center></th>
+            <th style="text-align: center;"><span class="fa fa-file"></span></th>
             <th width="100%">File/Folder</th>
             <th>Status</th>
         </tr>