STEIN.world - French translation

Finally, stein.world has received a French translation and also a revision of the Polish version. stein.world is now 100% translated into French and Polish. Spanish should follow next.

A big thanks goes to our moderator and community translator Makh who completed the French translation of stein.world for us in the last two weeks and has helped us a lot with the other translations and the moderation. He translated 400,000 words into French at a breathtaking speed!