message: Show user instead of target user.
diff: <app-expand :when="userFriendship.state === UserFriendship.STATE_REQUEST_RECEIVED" :animate-initial="true">
  <div class="alert alert-info">
  <p>
  - <translate :translate-params="{ username: '@' + userFriendship.target_user.username }">
  + <translate :translate-params="{ username: '@' + userFriendship.user.username }">
  %{ username } would like to be your friend.
  </translate>
  </p>
  