First draft
Fix compilation errors
Remove recording merge form; start to fix up the messages at the bottom. Artists with only release groups still need fixing.
Fix messages
Remove unnecessary standalone_only stash variable, per ocharles
Merge branch 'beta' into mbs-1754
Merge remote-tracking branch 'jessew/mbs-1754' into beta

* jessew/mbs-1754:
  Remove unnecessary standalone_only stash variable, per ocharles
  Fix messages
  Remove recording merge form; start to fix up the messages at the bottom. Artists with only release groups still need fixing.
  Fix compilation errors
  First draft