HUE-482. The Shortcuts button (at top right of Hue UI) does not do anything.

When this logic moved to JFrame I changed the selector to be a little more generic (use classes instead of ids).

desktop/core/src/desktop/templates/index.mako

@@ -202,7 +202,7 @@
             [<a href="/accounts/logout">logout</a>]
           </span>
         </span>
-        <a id="hotkeys" title="show keyboard shortcuts">
+        <a class="hotkeys" id="hotkeys" title="show keyboard shortcuts">
           <img src="/static/art/shortcut.png"> Shortcuts
         </a>
       </div>