Ice & Infantry On Ice Fix: This PR gives Princess some Cryophobia in …

…her movement planning. Currently, On a map with approximately 50/50 Ice/Land, she would jump and walk mechs onto the ice every turn, and lose many before she ever got to combat. With this change she jumped mechs into the ice Zero times in 10 games. And she will still walk on the ice when forced because she is landlocked. Otherwise she will take a land path around. Also fixes an unreported bug related to Infantry and Ice.