use admin's translation domain for delete checkbox

otherwise it's in messages ...
Merge pull request #2063 from uwej711/use_translation_domain_2_2

use admin's translation domain for delete checkbox
Update HelperController.php

fix bug for postgresql : Invalid text representation: 7 ERROR:  invalid input syntax for integer: """
Update HelperController.php
Improve support for postgresql when objectId="" and not null
adjust ErrorElement for symfony 2.5
Merge pull request #2186 from dbu/backport-2.5-fix

adjust ErrorElement for symfony 2.5 - in sonata 2.2 branch
Update installation.rst

Link fixed
Merge pull request #2199 from todstoychev/patch-3

Update installation.rst
Fix history actions permissions check
Fixed deprecated method usage in HelperController
Fixed deprecated usages
make the master 2.3.x-dev branch
add documentation support (travis and configuration)
Fix Sphinx installation
Fixed doc warnings and completed action_list
Allow user to alter query, idx before executre a batch actions
[travis] Add missing dependency
add missing extensions
[documentation] fix configuration and fix formatting