some re-arrangements of the automap stats

thoughts:
- the color scheme and arrangement is now closer to that of prboom-plus
  which i am used to
- who needs the z-coordinate in a 2.5-D world?
- add angle instead, it is also part of the original idmypos output
- i consider changing idmypos to show the three coords in the upper right
  corner regardless of the automap being active or not, maybe fading them
  out after a time with a ticker