mint-arena: Remove lcIndex and numPSs from snapshot_t

snapshot_t pss is now order of local clients.
cg_view was missing lcIndex when checking intermission state (which was wrong, but is now correct)
Fixed CG_PainEvent getting run when it's for a local client, also it executed multiple times.
mint-arena: Add CG_NumLocalClients
Merge remote-tracking branch 'mint-arena/master'

Conflicts:
	code/cgame/cg_event.c
	code/cgame/cg_playerstate.c
	code/cgame/cg_view.c
	code/cgame/cg_weapons.c
Merge remote-tracking branch 'mint-arena/master'
ebx: Re-enable per-player flag pick up sounds