Version 6.5.3 & Blacklist Bar Fix

* Updated to check for the blacklist bar/box in both the current document and elements that may not currently be in the document. Should fix certain cases where the bar wouldn't update after hidden thumbnails were added and blacklisted.
* Fixed some text indention and regex escaping.
Version 6.5.3
Merge pull request #45 from pseudonymous/blacklist-bar-fix

Version 6.5.3