This changeset reverts some or all edits made in changesets 154497155, 154497258, 154497968, 154499685, 154510745, 154510921, 154511079, 154513647, 154513664, 154538087, 154538487, 154538495, 154538674, 154538813, 154540026, 154543302, 154574883, 154574957.