Threaded backup!

My thinkpad died while trying to fight a frozen main thread of the game. The lag won, so I rewrote this mod's code so a backup procedure occurs in a separate thread. The main thread will just silently wait and track progress.

• Added support for .lang files, no hardcoded strings!
• Added Russian language translation
• Widened the buttons in a world manager GUI
• Fixed a bug where the backup process freezes main thread (see above)
• A small rebranding

Fluxstone-1.0.1.jar

SHA-256: 281ac34647be74912aa5505c5530efb174e0e42dc1127abeb5c203c8217473d6
SHA-512: 372cea53a67373943f3b56069211e92d1d37297f7559e613faafc8a3eb03ab127acc2b2ffd5c472001411f0f674d7edcbe735f333ad4bb17efa91151ebc37662