This changeset reverts some or all edits made in changesets 159957975, 159958544, 159958706, 159958735, 159958777, 159958817, 159958835, 159988551, 159988968, 159989109, 159989870, 159990175, 159990248, 159990319, 159990362, 159990787, 159990874, 159990961, 159991247, 159991346.