Advanced ProcCall improvements & Atom ProcCall

You can now right click an atom to call a proc on it if you have +DEBUG.
Also cleaned up callproc() code a bit.

code/modules/admin/admin_verbs.dm

@@ -114,6 +114,7 @@ var/list/admin_verbs_debug = list(
 	/client/proc/restart_controller,
 	/client/proc/enable_debug_verbs,
 	/client/proc/callproc,
+	/client/proc/callproc_datum,
 	/client/proc/SDQL2_query
 	)
 var/list/admin_verbs_possess = list(
@@ -175,6 +176,7 @@ var/list/admin_verbs_hideable = list(
 	/client/proc/restart_controller,
 	/client/proc/cmd_admin_list_open_jobs,
 	/client/proc/callproc,
+	/client/proc/callproc_datum,
 	/client/proc/Debug2,
 	/client/proc/reload_admins,
 	/client/proc/cmd_debug_make_powernets,