am 5bc4f4ac: Merge "If conversation list cursor is not loaded, defer mark unread until it\'s loaded." into jb-ub-mail-ur8

# Via Android (Google) Code Review (1) and Yu Ping Hu (1)
* commit '5bc4f4ac341edfd7b5ba9d810c6255cab58060c2':
  If conversation list cursor is not loaded, defer mark unread until it's loaded.