Revert [28948], which caused a regression.

see #29573 for trunk. see #28350.

git-svn-id: https://develop.svn.wordpress.org/trunk@30791 602fd350-edb4-49c9-b593-d223f7449a82
Fix JSHint error introduced in [30780].

see #30608.

git-svn-id: https://develop.svn.wordpress.org/trunk@30792 602fd350-edb4-49c9-b593-d223f7449a82
Themes: Use Customizer deep-links inside the theme modal.

props DrewAPicture, ocean90.
see #25569, #25571.
fixes #30553.

git-svn-id: https://develop.svn.wordpress.org/trunk@30793 602fd350-edb4-49c9-b593-d223f7449a82