Fix Typo
Fix level borders not being created
Clean up TILEDMap

Goal of cf57bcd was to make the managers level agnostic. TILEDMap might be an
extreme example of this now.

TILEDMap is now just a static object. Instantiating it will result in an empty object.

Pro:
- it will solely work on the input of it's own functions, thus there cannot be any race
conditions like when using mediator.getActiveLevel()

Con:
- non found yet