Fix disabled code, missile team is sent in s.team not s.modelindex

entityState_t::team is new in Spearmint. Q3 only networked team of proxy (in entityState_t::generic1).
Add missing check to unused bot code and disable the function
Fix and increase max BSP models (aka submodels)

I changed MAX_SUBMODELS from 256 to 512 to match ET in ioq3ztm r269, but was incomplete.

Increase MAX_SUBMODELS to 1024. Matches q3map2's limit and is 4 times Q3 size like Spearmint's MAX_GENTITIES.
Fix buffer overflow in cgame if more than 256 submodels. Moved MAX_SUBMODELS to cgame because it only matters there.
Increase bits networked for modelindex so can hold up to 1023 instead of 255. (Increase bits for modelindex2 to be consistant.)
Change error message when too many submodels (tell what limit is and number too many). Now it's the same as Raven's for EF and JA.
Make sure BOX_MODEL_HANDLE and CAPSULE_MODEL_HANDLE do not overlap with a submodels!