Fixed help link in nav bar. Removed account settings link.

lms/templates/navigation.html

@@ -24,8 +24,8 @@
       <li class="primary">
         <a href="#" class="dropdown">&#9662</a>
         <ul class="dropdown-menu">
-          <li><a href="#">Account Settings</a></li>
-          <li><a href="${reverse('help')}">Help</a></li>
+##          <li><a href="#">Account Settings</a></li>
+          <li><a href="${reverse('help_edx')}">Help</a></li>
           <li><a href="${reverse('logout')}">Log Out</a></li>
         </ul>
       </li>