Mapper Cleanup

The paint code in the mapper is redundant and difficult for people getting into the project to follow. Some initial commenting by Heiko on certain areas of the paintEvent code (such as German->English translation for some variables, and the logic with some of the transformations) would help immensely. I could condense the code later to methods for common actions like drawing player location, drawing the map room info, etc. instead of having the same code copy&pasted.