PIM-838 : clean edit view for variant group
PIM-838 : Clean variant group edit view
Merge pull request #363 from akeneo/fix/variant_ui

Fix/variant ui
Add crontab instruction for completeness
Up to date with README configuration, and switch to PHP 5.4
to prepare the future ;)
Fix phpdoc and unused variables
Fix phpcs
Fix PMD, remove unused variable
Fix phpcs
Update AttributeGroup unit test
Fix PMD, refactor mass action dispatcher
Run behat in prod env
Merge pull request #365 from akeneo/behat-prod

Run behat in prod env
Crorrected typo
Fixed grid filtered by locale (for the third time)
Improve behat wait method
Merge branch 'master' into PIM-838

Conflicts:
	src/Pim/Bundle/CatalogBundle/Tests/Functional/EventListener/UserPreferencesListenerTest.php