#121 LayoutController - return workflow_states
#121 LayoutController::getCollectionAction - if site not supplied, return layouts with site = null
#121 LayoutControllerTest - remove debug statement
[Rest] + fixed wrong namespace in LayoutControllerTest; [Site] + fixed wrong namespace in Layout.php
Merge pull request #122 from backbee/121

close #121 LayoutController - return workflow_states