-Updated door opening code

-Fixed enemy UMP45 not healing herself
-New healing sound from the actual game

-UMP45 can now throw grenades
-UMP45 can now take on striders, helicopters and gunships
-UMP45 now wont die instantly to a headshot from an NPC that she hasn't spotted
-UMP45 will now try to avoid active frag grenades
-Fixed friendly UMP45 not randomly checking up on the player

-Fixed UMP45's pain sounds playing over the death line

-UMP45 will no longer attack dummy NPCs (npc_enemyfinder)
-UMP45 will now try to avoid incoming mortar shells

-Fixed UMP45 still being somewhat unkillable

-Reverted the inf health change

-Haha try again punk, 2147483647 health

-Friendly UMP45 now heals a player when close by
-Friendly UMP45 wont attack rebels

-UMP45 now follows the player that pressed +use, rather than a random player on the map