Add newEntry initialization on controller init.

accountant/frontend/static/js/entries.js

@@ -50,6 +50,8 @@ accountantApp
         $scope.newEntry = new Entries({});
     };
 
+    $scope.resetNewEntry();
+
     $scope.setExtremes = function(e) {
         begin = moment.utc(e.min);
         end = moment.utc(e.max);