- If I remove a translation due to an error in it without adding a new one the left "Page text"-column stays green.
There's no "remove" / "delete" button. That's a problem.
I guess you assume that emptying a translation and clicking "save" should remove the translation. I guess that's quite reasonable.
Can you please file a bug / feature request for this at http://sourceforge.net/apps/trac/gallery/newticket.