message: ledger: add version in update banner
diff: @@ -642,7 +642,7 @@ on('BTDC_ready', () => {
  url: chrome.extension.getURL('options/options.html?on=update'),
  },
  },
  - text: 'Better TweetDeck has been updated',
  + text: `Better TweetDeck has been updated to ${BHelper.getVersion()}`,
  label: 'See the changes',
  },
  });
  