Search for a new hash as long as necessary
Implement game store
Fix hash production in two ways

Firstly, if the hash was indeed taken, the loop would've run
indefinitely without changing the tested hash.

Secondly, the hash was never returned as there was a new
variable shash declared in the scope of the loop block.
Merge branch 'master' of github.com:githubnemo/wikirace-serv

Conflicts:
	game.go
	main.go
	session.go