message: Fetch group data for all tags instead of those selected
  so that tag switching is not delayed by fetching group data, i.e group members and rooms.
diff: @@ -96,7 +96,7 @@ module.exports = React.createClass({
  this._visibleRooms = [];
  // When the selected tags are changed, initialise a group store if necessary
  this._tagStoreToken = TagOrderStore.addListener(() => {
  - TagOrderStore.getSelectedTags().forEach((tag) => {
  + TagOrderStore.getOrderedTags().forEach((tag) => {
  if (tag[0] !== '+' || this._groupStores[tag]) {
  return;
  }
  