message: de-tabulator tabulator.preferences -> UI.preferences
diff: @@ -91,7 +91,7 @@ function saveUser (webId, context) {
  webIdUri = webId.uri || webId
  }
  - tabulator.preferences.set('me', webIdUri || '')
  + UI.preferences.set('me', webIdUri || '')
  return webIdUri ? $rdf.namedNode(webIdUri) : null
  }
  @@ -108,7 +108,7 @@ function defaultTestUser () {
  }
  /* Stop storing it in prefs now we have localStorage
  - let webId = tabulator.preferences.get('me')
  + let webId = UI.preferences.get('me')
  return webId ? $rdf.sym(webId) : null
  */
  return null
  @@ -652,7 +652,7 @@ function offlineTestID () {
  return $rdf.sym($SolidTestEnvironment.username)
  }
  - if (tabulator.mode === 'webapp' && typeof document !== 'undefined' &&
  + if (typeof document !== 'undefined' &&
  document.location && ('' + document.location).slice(0, 16) === 'http://localhost') {
  var div = document.getElementById('appTarget')
  if (!div) return null
  @@ -813,14 +813,14 @@ function loginStatusBox (dom, listener) {
  if (!newidURI) { return }
  let uri = newidURI.uri || newidURI
  - tabulator.preferences.set('me', uri)
  + UI.preferences.set('me', uri)
  me = $rdf.sym(uri)
  box.refresh()
  if (listener) listener(me.uri)
  }
  var zapIt = function () {
  - tabulator.preferences.set('me', '')
  + UI.preferences.set('me', '')
  var message = 'Your Web ID was ' + me + '. It has been forgotten.'
  me = null
  try {
  