Nerfed freerun abilities.

Freerunners  can no longer damage players by rolling or sliding into
them. Freerun abilities can now only be used by teams with
'freerun=true' in them (only freerunner at current). Renamed
sh_givemoney to sh_givecash. Renamed sh_setmoney to sh_setcash. Fixed
!givecash to not be retarded. Started improving local chat system.
Attempted to fix ragdoll ownership but needs further work. Prevented any
possible minus numbers taking money from people by accident in
Add/TakeCash