Varios bug and layout fixes.
- Fixed API response when specifing a vars parameter
- Fixed error when creating a duplicate flag field when "Require Unique" is turned on.
- Fixed error which made searching impossible when on the 2nd or higher page of results.
- Changed redirect location to bin list after creating a new bin.
- Added link to start a bin in thebin list
- Added HTML5 support to WYSIWYG editor
- Added CSV export link to contacts bins
- Added automatic re-open of parent pages when using parent_id to create data hierarchies.