Changes

Grenade.c: Fix possible grenade memory leak
 (commit: a4d5c7b)

Packets/Grenade.c: Fix memory leak in nicer way
 (commit: 6331e3d)

Server.c: Add checks for spawn ranges in maps

Spawning outside of the map and having tent or intel
there can cause catastrophic issues like filling up
RAM in matter of seconds.
Do not allow this to happen
 (commit: 3560dce)

Source: Fix below 0 Z issues with grenades

This also introduces check for the absolute minimal Z
that player can get legit. May be used elsewhere too.
 (commit: a9e6123)

CreatePlayer.c: Send respawn data to limbo players as well

Without this patch we would have invisible players
if 2 players were in limbo state at the same time.
This way we have limbo players invisible and
when they decide to join they are automatically
shown to players that at least received state data.
 (commit: 190a43f)