Add group assigner button

Add group assigner button in menu.

include/header.php

@@ -75,6 +75,8 @@ $htalink = $config["general"]["enablehta"] ? "" : ".php";
                     <li><a href="viewer<?php echo $htalink ?>"><i class="fa fa-eye" aria-hidden="true"></i> <?php tl($lang["navbar"]["viewer"]); ?></a></li>
                     <li><a href="bans<?php echo $htalink ?>"><i class="fa fa-ban" aria-hidden="true"></i> <?php tl($lang["navbar"]["bans"]); ?></a></li>
                     <li><a href="rules<?php echo $htalink ?>"><i class="fa fa-book" aria-hidden="true"></i> <?php tl($lang["navbar"]["rules"]); ?></a></li>
+                    <li><a href="assigner<?php echo $htalink ?>"><i class="fa fa-picture-o" aria-hidden="true"></i> <?php tl($lang["groupassigner"]["title"]); ?></a></li>
+                    
                     <!-- I don't have time for this.
                     <li class="dropdown">
                         <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"><i class="fa fa-television" aria-hidden="true"></i></i>Ranking <span class="caret"></span></a>