Raw content return for Grid DataColumn & Column

Need to have a method  `getDataCellContent` to return raw parsed data cell content. This is useful when extending these Columns, for processing any other data before formatting via `renderDataCellContent`.
Raw content return for Grid DataColumn & Column

Need to have a method  `getDataCellContent` to return raw parsed data cell content. This is useful when extending these Columns, for processing any other data before formatting via `renderDataCellContent`.
Raw content return for Grid DataColumn & Column
Raw content return for Grid DataColumn & Column
Removed unnecessary blank space
Removed unnecessary blank space
first draft of the extension generator
Merge branch 'master' into feature/gii-extension-generator
added asSize method to format file size #2524
Merge branch 'master' of git://github.com/yiisoft/yii2 into 2524-formatter-format-file-size
no need for as number #2524
added code coverage using scrutinizer.com
Pjax container only required on first load.

Pjax inserts the response HTML into the container, it doesn't replace it.
So any subsequent pjax requests duplicate the container.
Unused?
Update .scrutinizer.yml
Further coding standards fixes.
removed duplicate arguments from base formattter
Edited the existing instructions

Didn’t touch the end yet, with the TBD et al.
Merge pull request #2535 from maximal/patch-1

Further coding standards fixes.
Closing and opening braces in Yii2 coding standards.