Updates: Message Colors & Key N for displaying all nicknames

[Admins]

Updates:
- the messages have different colors now, red for team member killed, green for enemy killed, white for your team took a base or a flag, black for your team lost a base or a flag, blueish otherwise
- when you press N then you see the nicknames of all players
- when laying a proximity mine or land mine then it is protected for 10 minutes against team members stepping on it
- you get slightly more exp for killing someone
- Storm Riders base has 3 hoverbikes now