Fixed attack highlight shown in fow

- We should be able to have longer attackranges than 1 during fow. The
highlight will not be shown if the fow is enabled on that tile. Only on
tiles within range of course that are not in the fow.
- So an archer has a normal attackrange of 3 and in fow 2. While a
spearthrower has normal 2 and in fow 1. Should both work without
problem, i hope.