Fix bug 676379: Provide a 'quick-review' view for one-click technical/editorial approval.

As a side effect, fix a bug in reverting to a specific revision; the
review tags of the reverted-to revision weren't being set back properly.
Merge pull request #1034 from ubernostrum/mark-as-reviewed-676379

Fix bug 676379: Provide a one-click 'quick-review' view