fixes codecombat/codecombat#655
fixes codecombat/codecombat#655 completely
Removes asynchronous name checking, though, if it ever worked.
regarding codecombat/codecombat#655 -> adds asynchronous name checking that actually works.
regarding codecombat/codecombat#655 debounce debounces.
Merge pull request #663 from domenukk/master

fixes codecombat/codecombat#655