Fix Content-Length calculation for multibyte strings.
Merge pull request #262 from ViacheslavPashkevich/master

Fix file Content-Length calculation for export.
Update Grid/Column/Column.php
Update Resources/views/blocks.html.twig
Update Twig/DataGridExtension.php
Revert "Update Twig/DataGridExtension.php"

This reverts commit ff097ce406258458a45f2ca6483fa1be52d1740b.
Add html default value for safe column parameter
Use value false to safe parameter instead of raw
use is sambas instead of ==
Merge pull request #267 from ip512/master

Add escape option for column render
Fixed errors with default values in Column __initialize.
Merge pull request #268 from karts/master

Fixed errors with default values in Column __initialize
Don't redirect with an  AJAX request

+ changelog update
separate js rendering
Method to render only html
Update Resources/views/blocks.html.twig
Merge pull request #270 from michelpa/sepHtmlJs

Add twig extension to render the html block only
Method added to RowAction for rendering manipulation per row

Adde a callback to RowAction, to manipulate rendering for every row
Fix CS for pull request #275

Fix CS in RowAction and ActionsColumn for pull request #275
Changed return value to null for pull request #275

Changed return value from false to null for pull request #275