message: update locales for notification title thingy
diff: "flash_tweets_mentions": { "message": "Mentions columns" },
  "flash_tweets_all": { "message": "Every column" },
  + "update_title_on_notifications": { "message": "Display an unread tweets/DMs indicator in TweetDeck's tab's title." },
  +
  "share_request": { "message": "Request tabs reading permissions" },
  "share_granted": { "message": "Permissions granted" },
  "shared_btd_h1": { "message": "Sharing" },
  