message: Do not assume that tags have been removed
  when moving tags
diff: @@ -35,7 +35,7 @@ const TagOrderActions = {};
  TagOrderActions.moveTag = function(matrixClient, tag, destinationIx) {
  // Only commit tags if the state is ready, i.e. not null
  let tags = TagOrderStore.getOrderedTags();
  - let removedTags = TagOrderStore.getRemovedTagsAccountData();
  + let removedTags = TagOrderStore.getRemovedTagsAccountData() || [];
  if (!tags) {
  return;
  }
  