Add revision edit controller.
Fix custom license field toggling in revision edit page.
Add method to contrib object to check whether it's restricted.
Remove obsolete ICON_EDIT template variable.
Remove duplicate definition of revisions tab.

data-show-panel already takes care of opening the intended tab.
Check that the queue item is still open before trying to run certain actions.
Use correct route for queue tag links.
Add ability to run custom actions after a revision is approved/denied.
Handle BBCode demo display after revision is approved.
Add style demo manager.
Remove style demo install method in contrib tools.
Split demo config options by branch.
Add style demo hooks.
Run style demo installer upon revision approval.
Fix premature return.
Fix contrib sort.
Clean up some logic in contrib details assigment.
Revert some unintenional config value changes.
Fix undefined variable orig_screen_order in contrib manage controller.
Fix screenshot move & delete links.