Battle system (alpha) + new location

I have created battle system already. The difficulty of enemies should
be dependent on your character’s age and HP but the numbers need to be
tweaked a bit.

It works more or less but the weapon selection needs to be finished so
it’s best if you get gun in Curling street - this was tested and works
best.
Merge branch 'master' of https://github.com/ondrejsynacek/ZombieAdventure

Conflicts:
	death.py
	hint.py
	score.py