Create de_DE.lang
Created en_GB.lang

Created en_GB.lang for the pedantic brits!

Changes Niter -> Nitre & Sulfur -> Sulphur

(Did it right this time)
Adjust licensing
Merge remote-tracking branch 'Vexatos/patch-1' into feature/localization
Merge remote-tracking branch 'SeanTheBaker/patch-1' into feature/localization
Standardized file headers
Merge branch 'feature/localization' into develop