Added ant world renderer

Added AntWorldView to visualise the simulations.
- worlds are centred to the screen
- each cell type has a different colour
- clear cells green
- rocky cells grey
- red ant hill dark red
- black ant hill black
- red ants light red
- black ants dark blue
- food light brown
- trails washed out green

Also updated AntWorld to catch out of bounds ant commands. This should
never happen because of the rocky ring around maps but a problem with
the maps supplied caused this to crash.

changed supplied map workingworld so that its height is correct
Merge branch 'master' of https://github.com/FlipE/AntGame