remove fav/touch icons (were not working before).

The spurious comment disabled the fav/touch icons in the previous version anyway. Removing them since they can be easily added using `decoration.body.head` element. Otherwise they would produce bad links if these icons are not provided.
disable menu items with empty `href` (issue #8).

The link is disabled using Bootstrap’s .disabled class on the menu item. Also, the href attribute is not set on <a>, making the link behave as text.
Merge branch 'no-href-items'