Twitter boostrap style has been applied for "YiiRequirementChecker" web view.
Yii core requirements have been updated: PHP version raised up to 5.3.3
Fixes #226: atomic operations and transaction support in AR.
Fixed typo in internals/ar.md.
fixed minor JS codestyle issues
AR atomic scenarios fixes.
AR atomic scenarios internals doc fix.
isOpAtomic → isOperationAtomic
Better argument name in the ActiveRecord::isOperationAtomic() method.
Merge pull request #253 from resurtm/ar-transactions-3

Fixes #226: atomic operations and transaction support in AR.
AR internals doc fix.
Fixes issue #257: removed the $view parameter from widget methods.
Removed unneeded code.