Merge pull request #300 from sylvaindeloux/2.3-develop

SONATA-448 - Fixed menu display
Merge pull request #301 from sylvaindeloux/2.3-develop

SONATA-462 - Added page to fixtures
SONATA-467 - Updating fixtures
Merge pull request #302 from grosenbaum/update-fixtures

SONATA-467 - Updating fixtures
Updated readme to add a reset data section
Merge pull request #303 from Bladrak/readme

Updated readme to add a reset data section
Added some API GET behat tests