Fix for resetting the metadata dialog.

Saving a backup works better in the case when title is not set and we
are using the video's title.  Before, if you opened the dialog, hit
the close button, then re-opened the dialog, the title would
disappear.
Use the video's description as a fallback for the metadata dialog (#1302)
Updated code to set the initial workflow stage (#1306)
Merge branch 'new-editor-primary' into new-editor-primary-1274