message: Add a T icon to indicate start of whole chat
diff: @@ -460,7 +460,10 @@ module.exports = function (dom, kb, subject, options) {
  removePreviousMessages(event, messageTable)
  } else {
  insertPreviousMessages(event, messageTable).then(done => {
  - if (done)
  + if (done) {
  + moreButton.firstChild.setAttribute('src', UI.icons.iconBase + 'noun_T-Block_1114655_000000.svg')
  + moreButton.disabled = true
  + }
  })
  }
  messageTable.extended = !messageTable.extended // Toggle
  