subscribe_to_feed: stop fetching URL multiple times while subscribing, various other speedups

classes/handler/public.php

@@ -553,7 +553,7 @@ class Handler_Public extends Handler {
 				break;
 			case 4:
 				print_notice(__("Multiple feed URLs found."));
-				$feed_urls = get_feeds_from_html($feed_url);
+				$feed_urls = $rc["feeds"];
 				break;
 			case 5:
 				print_error(T_sprintf("Could not subscribe to <b>%s</b>.<br>Can't download the Feed URL.", $feed_url));

classes/rpc.php

@@ -195,12 +195,6 @@ class RPC extends Handler_Protected {
 		print json_encode(array("result" => $rc));
 	}
 
-	function extractfeedurls() {
-		$urls = get_feeds_from_html($_REQUEST['url']);
-
-		print json_encode(array("urls" => $urls));
-	}
-
 	function togglepref() {
 		$key = db_escape_string($_REQUEST["key"]);
 		set_pref($this->link, $key, !get_pref($this->link, $key));