Changes

Server: Remove debug log and fix sendMessageToStaff
 (commit: 639a0e5)

Packets.c: Limit all messages to 1 per 500ms

I think it is only fair to limit players like this.
And if they continue spamming like this. They will be muted
for excessive spam.

Also staff members are excluded from both of these limitations
 (commit: 53e8171)

Protocol.*: Set chat message type to system and make broadcastServerNotice variadic
 (commit: 0d36b58)

Commands.c: Make all broadcastServerNotice references variadic
 (commit: 83244dc)

Server: Small spam logic fixes
 (commit: 1231d7d)

Commands.c: Add /adminmute

Admins can receive a LOT of messages.
And some players love to abuse this.
Lets give staff the ability to mute players
from the usage of /admin messages.
 (commit: c7ff3e7)

Commands.c: Sort commands
 (commit: 7a767e3)

Packets.c: 3 block removal doesnt add 3 blocks back
 (commit: 11a7b97)

Commands.c: Sort commands in linked list

Sorting the commands in linked list allows us
to send them in z-> order in messages which
shows up on client side as a->z.
 (commit: 9c4255a)

Commands.c: Fix global Killing and building toggle
 (commit: 91754ae)

Server: Add ping protocol support

This is used by clients to send raw
UDP packets to the server and be
able to check the ping that way.

And since clients send it on the
same socket as all other Enet packets
we have to intercept the packets before
enet processes them.
 (commit: 8d1678f)