Achievement Message should be translatable

[FirewoodLoki]

As the title said, Achievement message should be translatable. I suggest the title remain in English, for the user to check their stats. The description part should be translatable, so they will know why they are getting the achievements.

[CloneMMDDCVII]

@FirewoodLoki This is a scheduled update. It should come soon. Be ready ;)

[parabola949]

This is a bit harder than you might think, with the current way the description is saved. I'll have to do something about it later. At the moment, the new website has priority