Support Promise and asynchronous communication for actionable callback and events

[JavaTMP]

1. bootstrap-actionable/js/bootstrap-actionable.js

   Line 97 in 0b737f9

   $($that.outputElement).triggerHandler($that.containerReadyEventName);

2. bootstrap-actionable/js/bootstrap-actionable.js

   Line 112 in 0b737f9

   var removeResponse = $(localOptions.outputElement).triggerHandler(removeEvent);