Fix Editor Save Button not allowing unpublish
Fix Editor Save Button not allowing unpublish

Closes #2918

airycanon/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,JohnONolan/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,airycanon/Ghost-Admin,JohnONolan/Ghost-Admin,dbalders/Ghost-Admin,TryGhost/Ghost-Admin,TryGhost/Ghost-Admin,dbalders/Ghost-Admin