prefs: enable selecting all feeds in a category

modules/pref-feeds.php

@@ -57,6 +57,7 @@
 					$cat['bare_id'] = $feed_id;
 					$cat['name'] = $line['title'];
 					$cat['items'] = array();
+					$cat['checkbox'] = false;
 					$cat['type'] = 'category';
 
 					$feed_result = db_query($link, "SELECT id, title, last_error,

prefs.js

@@ -288,6 +288,7 @@ function getSelectedFeeds() {
 	var rv = [];
 
 	items.each(function(item) {
+		if (item.id[0].match("FEED:"))
 			rv.push(tree.model.store.getValue(item, 'bare_id'));
 	});