Port back code-changes from Utilu Nightly Tester Tools 3.7.1.1

[whimboo]

Similar to PR #186 this issue keeps track of the work for porting back all the changes as done in Utilu Nightly Tester Tools 3.7.1.1. @UtiluMark will work on it.

[UtiluMark]

@whimboo What do you want to be the next change for me to port back in a new PR?

[whimboo]

I think all the customize titlebar changes would be nice to have next.

@xabolcs what do you think about removing partially translated locales? I don't think it's a good idea and we might better get in contact with the contributors who originally provided those locales. @UtiluMark which locales would be affected by this?

[xabolcs]

I agree with you @whimboo.

A new issue for updating locales would be good, but first land all functional changes and leave the string update at last.

[whimboo]

Sounds perfect to me. @UtiluMark once you finished with the parts of my last comment, lets re-list all the remaining issues in a new comment. That way we can get an overview what's left to do.