Merge branch 'bugfix/mailboxQuotaSearch' into 'stable-3.1'

Search for name in mailbox quota

See merge request ispconfig/ispconfig3!952

interface/web/mail/templates/user_quota_stats_list.htm

@@ -17,7 +17,7 @@
                     </tr>
                     <tr>
                         <td><input class="form-control" type="text" name="search_email" value="{tmpl_var name='search_email'}" /></td>
-                        <td><input class="form-control" type="text" name="search_system_user" value="{tmpl_var name='search_name'}" /></td>
+                        <td><input class="form-control" type="text" name="search_name" value="{tmpl_var name='search_name'}" /></td>
                         <td>&nbsp;</td>
                         <td>&nbsp;</td>
                         <td>&nbsp;</td>
@@ -50,5 +50,5 @@
                 </tfoot>
             </table>
 </div>
-        
+
     </div>