This basically leaves us with one single theme again and what it means is that we don't have to care about themes for any kind of images at all now and thus we can "squash" things like this UdjinM6@721288e. Also, we can finally clean up some legacy drkblue mess UdjinM6@06e1f59.

And I would actually keep the Traditional theme - it requires almost no additional code and no images after the "squashing" commit, so it's very lightweight (UdjinM6@b190fd8) but it can be very useful for people running qt wallets in weird environments (some exotic linux distros, crazy small resolutions etc.). I know that at least some people were actually using this theme at some point.

Big fan of removing the themes mess as proposed by UdjinM6 👍

Agree on removing themes and cleaning up drkblue. Traditional seems to still work so don't mind either way on that one. FF'ed to 06e1f59.

Travis failed due to some (unrelated) apt-get timeout issues.