Translating PPSSPP

[Apology11]

I searched the strings myself now, as not all were in the en_US.ini , but maybe we could make this clearer by addin categories depending on the menu (like "game settings","main settings" and "main menu"). For example now its very confusing, as
date format is in [graphics], but
day light saving time is in [system]

Also it would be a lot easier if every dev, who updates the strings adds the new strings at least in the en_US file so all other languages have a reference.