Add DM zone to /playercount

[Casla02]

I think that if we could see how many people are in DM zone it would be better for us, For example: You're in LV and you've nothing to do and you want to go to DM zone you could see how many people are in the DM zone. /discuss

[VazZ]

In addition to what Hitman said, there is a map that you can open using F11 to check approximately how many people are in there by looking at the amount of blips. (That's incase someone was going to create this in the server development board. It's not needed for the reason I just stated)