Remove [listname] from imported subjects (list contributions).

exec/listserver.js

@@ -507,6 +507,9 @@ function process_contribution(header, body, list)
 	if(msg_area.sub[list.sub.toLowerCase()].is_moderated)
 		header.attr |= MSG_MODERATED;
 
+	// Remove [listname] from imported subject
+	header.subject=header.subject.replace(RegExp("\\["+listname+"\\]\\s*"), "");
+
 	if(!msgbase.save_msg(header, body.join('\r\n'))) {
 		log(LOG_ERR,format("ListServer: %s !ERROR %s saving message to sub: %s"
 			,list.name, msgbase.error, list.sub));