Revert "Remove jQuery UI handles from 'load-scripts.php' when on the CBOX Theme Options page."

Commit 3cee34a attempted to fix issues when using an older version of
jQuery and jQuery UI using a brute-force removal of 'load-scripts.php'.

This is the wrong way to go about this as this caused issues when the
SCRIPT_DEBUG constant is in use.

The next commit will fix this the right way.

See #224.
Deregister various jQuery UI widgets when on the CBOX Theme Options page.

Since we currently rely on an older version of jQuery and jQuery UI (see
WP's jQuery UI widgets from loading.

This is the proper fix to #224.