Add debug flag toggle command, and useful debug logs to the scheduler.

Add Slovak lang, fix the mockbukkit tests finally...

Add Russian & Spanish translations, thanks @Rener!

BugFix: handle un-initialized worlds created via plugin after server start (e.g. Multiverse)

Add config option for sleeping during blood moons, code cleanup & log fix (the colors are gone, but the loglevel is correct... 😢)