Client-side validation for bootstrap3.
Make sure validator is called first, not removed, and that prevented events don't go through on the Lightbox.
Style disabled buttons to have black text when hovered over.
Remove spinners when submit event prevented.
Added focus and active stylings to disabled buttons to increase legibility.
Merge branch 'master' into change-password

Conflicts:
	themes/bootprint3/css/compiled.css
	themes/bootstrap3/css/compiled.css
	themes/bootstrap3/js/lightbox.js