[WIP] Make it possible to edit app status in the lookup tool (bug 1013472)

https://bugzilla.mozilla.org/show_bug.cgi?id=1013472

WIP, I need to make it work for versions as well.
Ok so, it looks weird, but there are only mkt statuses in there. It'll get better once [bug 1021196](https://bugzilla.mozilla.org/show_bug.cgi?id=1021196) is done.