Fix bug 1355850: check unsaved changes when entering batch editing (#600)
Fix bug 1355850: check unsaved changes when entering batch editing (#600)


jotes/pontoon,jotes/pontoon,jotes/pontoon,mastizada/pontoon,mastizada/pontoon,jotes/pontoon,mozilla/pontoon,mozilla/pontoon,mathjazz/pontoon,mastizada/pontoon,mathjazz/pontoon,mathjazz/pontoon,mathjazz/pontoon,mathjazz/pontoon,mastizada/pontoon,mozilla/pontoon,mozilla/pontoon,mozilla/pontoon