don't display entries twice when refreshing during loading (fix #473)

src/main/webapp/js/controllers.js

@@ -721,6 +721,9 @@ module.controller('FeedListCtrl', [
 				}
 
 				var callback = function(data) {
+					if (data.offset == 0) {
+						$scope.entries = [];
+					}
 					for ( var i = 0; i < data.entries.length; i++) {
 						$scope.entries.push(data.entries[i]);
 					}