Remove protocol from video embeds to make them https safe
Fix displaying of edit field when image is empty
Merge changes from upstream
Fix video tests to work with protocol relative urls
Only try to delete revision directory if it exists
Lose reference to Content in re-loader
Receive publishing steps in Simultaneous publishing launcher
Log publishing error
Send 'complete' message to browser
Run publishing pipeline in correct db scope
Add missing index on published revision table primary key
Fix UI export of allowed groups
Renderable needs to respond correctly to #to_ary
Include details of page that generated the error in any exceptions
Mysql only allows indexes up to 767 bytes
Add missing index to `target_id`

This speeds up searches for aliases during publishing
Scoping is now done using a dataset rather than a (revision, visibility) pair
Schema instances are a little overwhelming in the console
Allow for scoping to arbitrary datasets
Replace "CREATE TABLE..." SQL string with Sequel method