Here you can order the main menu sections and disable/enable menu links. Useful if you don't want clients
to see certain page links. Disabling a menu item does NOT disable the page itself, so if you know the page url
you can access it manually. For example, if the settings menu link is disabled, access '?p=settings' to view it.
Only the main sections can be ordered, there doesn't seem any point in having the menu links themselves sortable. To re-order, drag
and drop the main headings.
To disable a section, hide ALL links in that section. You must click 'Update' after ordering to action
your changes. To reset links back to their default appearance, click the 'Reset Links' button (this is hidden until at least 1 ordering preference has been set).
To see menu changes refresh main admin page. Note that if you add or update admin pages, you may have to update
the admin menu link preferences again as the admin page links will be reset.