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
Update Migration.php
Changed '_' to equal html code.
added codeception tests to frontend
Merge pull request #2452 from joni-jones/master

Changed '_' to equal html code.
modified buttons attributes to skip sf-crawler bug
added codeception to backend
added button attributes to skip sf-crawler bug
added codeception tests to common
added codeception main yaml
added codeception tests to console
added index tests files to application
added guide notes
newlines fixed, code-guy deleted