message: make autocomplete work again
diff: @@ -534,7 +534,8 @@ export default class MessageComposerInput extends React.Component {
  // The first matched group includes just the matched plaintext emoji
  const emoticonMatch = REGEX_EMOTICON_WHITESPACE.exec(text.slice(0, currentStartOffset));
  if (emoticonMatch) {
  - const unicodeEmoji = EMOJIBASE.find(e => e.emoticon && e.emoticon.contains(emoticonMatch[1]));
  + const data = EMOJIBASE.find(e => e.emoticon === emoticonMatch[1]);
  + const unicodeEmoji = data ? data.unicode : '';
  const range = Range.create({
  anchor: {
  