Defender and attacker should take losses after combat

[adam-blackwater]

Idea

Update tokens when there is combat between two territories.
Any time there is an attack, there should be a percentage of tokens lost for either side.

Example

T.a{tokens=10} T.b{tokens=5}
T.a attacks T.b = T.a{tokens=8} T.b{tokens=0}
Make the "loss modifier" a variable which can be fine tuned at another time