Use new node (customizable) activity, if available (and strip ctrl chars)

This allows customized node actions/activity to be sent over finger/activeuser
(so visible in sbbsimsg.js for example).

exec/fingerservice.js

@@ -183,11 +183,13 @@ if(request=="") {	// no specific user requested, give list of active users
 		if(node.misc&NODE_ANON)
 			continue;
 		u.number=node.useron;
-		var action;
+		var action = strip_ctrl(node.activity);
+		if(!action) {
 			if(node.action==NODE_XTRN && node.aux)
 				action=format("running %s", presence.xtrn_name(u.curxtrn));
 			else
 				action=format(NodeAction[node.action],node.aux);
+		}
 		action += presence.node_misc(node, /* is_sysop: */false);
 		t=time()-u.logontime;
 		if(t&0x80000000) t=0;
@@ -315,12 +317,14 @@ if(request.charAt(0)=='?' || request.charAt(0)=='.') {	// Handle "special" reque
 				if(node.misc&NODE_ANON)
 					continue;
 				u.number=node.useron;
-				var action;
+				var action = strip_ctrl(node.activity);
+				if(!action) {
 					if(node.action==NODE_XTRN && node.aux)
 						action=format("running %s", presence.xtrn_name(u.curxtrn));
 					else
 						action=format(NodeAction[node.action]
 								,node.aux);
+				}
 				var t = time()-u.logontime;
 				if(t&0x80000000) t = 0;
 				list.push({