This commit adds Korean translations for egg groups, generations, languages, regions, stats, and version names. Also the ??? and shadow types.
It also fills in some missing foreign version names for S/M and US/UM (from Bulbapedia).
Add Japanese translations of the generation names, thanks to @SethETaron. I think this marks our first unofficial Japanese translation. 🎉
Also, fix some issues with Gen VII:
* generation names were missing for every language
* the identifier was incorrect — it was sun-moon instead of generation-vii
Fixes#250, #251, and #252.