Rewrite CTF bonus

Rewrite CTF bonus

Consider paths instead of just the distance between squares.

racingkings STC
LLR: 2.96 (-2.94,2.94) [0.00,10.00]
Total: 413 W: 205 L: 116 D: 92
http://www.variantfishtest.org:6543/tests/view/5e94459d6e23db4f73614c65

racingkings LTC
LLR: 2.95 (-2.94,2.94) [0.00,10.00]
Total: 387 W: 181 L: 97 D: 109
http://www.variantfishtest.org:6543/tests/view/5e944f3c6e23db4f73614c72

kingofthehill STC
LLR: 2.95 (-2.94,2.94) [0.00,10.00]
Total: 1416 W: 701 L: 587 D: 128
http://www.variantfishtest.org:6543/tests/view/5e9445b86e23db4f73614c69

kingofthehill LTC
LLR: 2.96 (-2.94,2.94) [0.00,10.00]
Total: 1130 W: 553 L: 445 D: 132
http://www.variantfishtest.org:6543/tests/view/5e944f5a6e23db4f73614c75