refactor flash messaging, added item name to flash messages
removed setFlash method
renamed variables to follow coding standards
Merge remote-tracking branch 'origin/master' into item_name_in_flashes

Conflicts:
	Controller/CRUDController.php
	Resources/views/standard_layout.html.twig
cs
Merge branch 'item_name_in_flashes' of https://github.com/benoitpointet/SonataAdminBundle into benoitpointet-item_name_in_flashes

Conflicts:
	Controller/CRUDController.php
	Resources/translations/SonataAdminBundle.de.xliff
	Resources/translations/SonataAdminBundle.en.xliff
	Resources/translations/SonataAdminBundle.fr.xliff
Introduced core bundle flash messages
Fix test for PHP 5.3 compatiblity
Merge pull request #1866 from marekkalnik/benoitpointet-item_name_in_flashes

Benoitpointet item name in flashes
Merge branch 'sonata/master'