Fix bug 1383483: Set #source iframe background to white (#675)
Fix bug 1383483: Set #source iframe background to white (#675)


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