Updated the HTML button in the format bar: moar padding
Adjusted spacing on formatbar.
Fixes some memory problems, and a previous regression.
Renamed a UIBarButtonItem var for clarity.
Merge pull request #345 from wordpress-mobile/issue/270-toolbar-refinements

Format bar refinements
Merge pull request #346 from wordpress-mobile/issue/memory-problems

Fixes some memory problems, and a previous regression.
Merge branch 'release/0.2.3' into issue/325-placeholders