Add Selected gettext method for instant translation

[BrunoMine]

This allows you to select the language of the translated string. Can you test with intltest. Referenced Issue

[ShadowNinja]

I don't know if I like this. It can never be fully functional -- there are only a few things that can be translated dynamically.

[BrunoMine]

Sorry for the wrong word (word and no world) at commit.

there are only a few things that can be translated dynamically.

I think that there are only a few things that can not be translated dynamically. Some relevant examples: doc <=(That is enough to justify) adventures PVP games (for all see the rules)