Fixed some wording
Added missing use statement.
Merge pull request #436 from suralc/fix-4-2

Added missing use statement.
Merge pull request #435 from ploaiza/patch-1

Fixed some wording
Enhance Dropdown to use items as  strings. Remove string=divider rule
formatter WIP.
Finished Formatter.
Added "formatter" app component.
Removed breaking test.
Removed breaking tests.
Fixes issue #441: InvalidRequestException should be HttpException
Fixed typos in new Formatter classes
Fixes issue #439
Merge branch 'master' of github.com:yiisoft/yii2
refactored numberformatting in base\Formatter

added decimalSeparator and thousandSeparator properties.
issue #48
Updated requirements about yii\i18n\Formatter
Removed unused method.
Use class constants for Event declatration in ActionFiler
Implemented MaskedInput widget.
Merge branch 'master' of github.com:yiisoft/yii2