TODOs updated, they were wrong.
A cap put on the number of tanks a Quark can spawn.
Merge branch 'master' into enemies-ernir
Spheroids added
Merge branch 'master' into enemies-ernir
Enforcers added
Sparks added
Rudimentary corner handling for the sparks.
Merge branch 'enemies-ernir'

Conflicts:
	managers/entityManager.js
Merge branch 'master' of https://github.com/Ernir/robotron because Oddur and I were merging at the same time!