am 5de674e1: Merge change 3013 into donut

Merge commit '5de674e1cbd6e43b6d7954ccacf5cd709b30265d'

* commit '5de674e1cbd6e43b6d7954ccacf5cd709b30265d':
  Adding missing callback onJsConfirm to dismiss any confirmation dialogs
  fix a bug in GL lighting where the specular component could be ommited when vertex material was disabled.