* Use event delegation for triggering the customize loader (so we play nicely with infinite scroll).
* Use data attributes on .load-customize links instead of parsing the href.
* Properly translate the 'Customize' string instead of injecting the replacement with JS.
git-svn-id: https://develop.svn.wordpress.org/trunk@20352 602fd350-edb4-49c9-b593-d223f7449a82