Fixes missing/broken admin permission checks

Also fixes a small issue with the permissions panel, because the error
message was really annoying me.

code/datums/datumvars.dm

@@ -426,7 +426,7 @@ client
 
 /client/proc/view_var_Topic(href, href_list, hsrc)
 	//This should all be moved over to datum/admins/Topic() or something ~Carn
-	if( (usr.client != src) || !src.holder )
+	if(!check_rights(R_ADMIN|R_MOD))
 		return
 	if(href_list["Vars"])
 		debug_variables(locate(href_list["Vars"]))