Made cvar for displaying class menu on first spawn. Renamed class menu cvars.

cstrike/cfg/sourcemod/zombiereloaded/zombiereloaded.cfg

@@ -154,7 +154,11 @@ zr_permissions_use_groups "0"
 
 // Re-display class selection menu every spawn.
 // Default: "0"
-zr_classes_spawn "0"
+zr_classes_menu_spawn "0"
+
+// Display class selection menu when a player spawn for the first time.
+// Default: "0"
+zr_classes_menu_join "0"
 
 // Player is assigned a random class every spawn. [Override: zr_classes_default_*]
 // Default: "0"