Issue #3154 - DataColumn filter model validation error indication added
Issue #3154 - GridView - list of filter model validation errors added to summary
Issue #3154 - DataColumn checkForFilterErrors() now use Html::addCssClass
BaseListView - errors rendering added
GridView - error rendering scheme changed
GridView/DataColumn - moved error list display into GridView
DataColumn - error detection moved into renderFilterCellContent()
Merge pull request #3164 from ivan-kolmychek/3154-gridview-filter-error-indication

GridView filter error indication added (#3154)
Refactored the code for #3154