Remove the ? from "Log out" (#1231)

Signed-off-by: Marius Blüm <marius@lineone.io>

management/templates/index.html

@@ -108,7 +108,7 @@
             <li><a href="#web" onclick="return show_panel(this);">Web</a></li>
           </ul>
           <ul class="nav navbar-nav navbar-right">
-            <li><a href="#" onclick="do_logout(); return false;" style="color: white">Log out?</a></li>
+            <li><a href="#" onclick="do_logout(); return false;" style="color: white">Log out</a></li>
           </ul>
         </div><!--/.navbar-collapse -->
       </div>