Added colorblind mode checkbox
Actually added colorblind mode checkbox
Change Cutscene file opening to be amending.

This allows us having the credits screen done easily for each mod.
Remove game specific credits in default mod, keep engine specific credits.
Added colorblind tool tips for item quality
Fixed tooltip for Normal quality item
Merge remote-tracking branch 'upstream/master'
Pass item quality descriptions to msg->get()
Merge pull request #690 from blazindragon/master

Colorblindness Interface Options & Item Quality Tooltip
Merge pull request #689 from stefanbeller/credits

Credits done right ;)