re-enable analysis divider
document game export
upgrade vendors
Merge branch 'master' of github.com:ornicar/lila

* 'master' of github.com:ornicar/lila:
  Restyle messages drop-down.
  Remove JS link on Challenge Notif
tweek bookmark icon
Revert "Restyle messages drop-down."

This reverts commit 3a8a2f132551f96cea9dd86efae314057bb84b54.
Revert "Remove JS link on Challenge Notif"

This reverts commit b18b8478be2eb133086e573a588a9b082fce75b8.
bind esc to chessground.cancelMove in round, analysis, and puzzle