New Zombie Alert!

- Suicide Zombie (strapped with TNT!)
- Automatic sentry limit of 12 introduced
- Fixed the manual gun turret so anyone can shoot it successfully now, and will not get stuck either
- Sentries will now award proper kills to player's score
- Sentries will now award cash correctly to whoever placed them
- Grenade launcher bug now fixed for clients
- Dark blue colour associated with a player's score changed to a lighter, more readable version
- Repair sfx bug fixed so it will no longer spam
- Repair all button added (some player's did not know of the shift shortcut)

Be safe out there!