Implement crash handling on Linux

This will allow us to generate crash dumps and have users report
crashes.
Remove some unnecessary dummy functions.
Change dump file extension
Implement crash report system on Windows.
Implement backtraces on Windows.

Much !!FUN!! was had
Remove unused function
Fix stupid tabs.

Thanks, QtCreator... ._.
Add a missing letter
Bump version to 0.3.5
Status pills. This doesn't build yet.
Finish status pills.
Add static data path for ... static data. Like translations. Move translations there.
Screenshot upload dialog(s) now have the console window as parent.
Restore manage screenshots in main window.
Merge branch 'feature_crashreport' into develop
FTB paths changed on windows. Fixes #255
Merge pull request #275 from MultiMC/feature_ftb_new_paths

Fix FTB paths on windows
QDir::exists is not static in Qt 5.1.1
Some more FTB related debug info
More FTB debug stuff