Decouple localization/translation updates from game releases

[Dev-iL]

My suggestion is that localizations are managed as {something like} auto-building mods, so that they can be updated whenever updates are available (or just periodically once every few days) regardless of game updates.

Admittedly, this isn't very important at the current stage of the game, where game updates (that happen to pull localization updates) happen quite often, but as the game stabilizes and releases become less frequent (all the while the game keeps growing in popularity, and possibly in people interested in helping translate it), there seems to be no logical explanation for new translations not making it into the game just because no game releases happen for a while.