- Updated blazy.formatter.manager to blazy.formatter for blazy:rc7+.

- Updated to the latest Blazy to re-use method Blazy::containerAttributes, etc.
- Added SlickManager::buildNavigation for code readability.
- Added SlickSkinManager::getSlickPath for re-use, and prioritized composer.
- Re-enabled BC for slick_hook_info() till slick:3.x, or 9.x.
- Ported BC BlazyManager::buildSkins so that Blazy can remove it safely.
- Fixed for Vanilla leak with optionset thumbnail.
- Fixed for default value regression.