Make nonEmpty constraint also reject input containing whitespace only
Added test for nonEmptyText data validator
onDisconnected callback gets called when comet connection is closed
fixed initialization order
Merge pull request #913 from nraychaudhuri/872_invoke_comet_disconnect_callback

now callbacks gets called when comet connection is closed
Merge pull request #914 from nraychaudhuri/fix_sporadic_play_build_failure

fixed initialization order
Merge pull request #910 from rschellhorn/nonEmptyText

Make nonEmpty constraint also reject input containing whitespace only