Fixed NRE when NPC's are killed in the crash
Don't kill NPCs that contact the plane after spawn
Added config options to lock crates to the player/clan/team/friends that shot it down;
"Lock loot to player who shot down plane"
"Allow friends to loot"
"Allow clan mates to loot"
"Allow team mates to loot"
"Amount of time containers will be locked to the player who shot down the plane (seconds)"