Show GUIDs in game + Devmap notification

I added an ability to show the other team's players' guids.  It is currently only available during readyup and is bound to the same key as timeout (actionslot 2).  If I find a way to create custom actions or bind any key, I will make this ability available always.  I also will probably make an option to show it in the menu once the mod tools come out.  In the image below all the guids are set to 0 because they are bots and do not have valid guids.

setdvar("gm_readyup_show_enemy_guids", true);

I also added a notification that devmap is running on the server
setdvar("gm_sv_cheats_notifier", true);