fix #18

[NChristel]

Set default language to English in settings if OS language is not in recognized languages. That way the game won't crash if it can't find a language, but still shows a "???" at the language selection such that one may choose whatever language fits them best.

[GabeJWJ]

Hey sorry for the late response.

First of all, it is touching too many files. Specifically, it removes the fallbacks in the font file which is a big problem. Most of the other unnecessary changes are fallout from the font file's uuid changing, but also you should remove the "side_side.jpg" and its import file. I don't know why those keep showing back up. Should look into it.

More importantly, I think the fix should be when the default language is set on lines 37 or 38. It's a little tricky to find out if the locale code is in the supported list or not, so I understand that's more work. Really, the languages thing should probably be a dictionary. I must've had a reason for not doing that, but I don't recall what it was. That kind of wide-reaching change is probably something I should do.

Let me know if you specifically want to, otherwise I'll do it myself and close this PR.