Some bug fixes (#5)

* Ensure proper return values based on input type and mode

* Added re-cash mechanism for dynamically built dialogs

* Added missing class list for action button

* Added extra methods to hide/show buttons

* Made code a little bit more succinct

* Fix flashing dialog at end of animation

* Added callback to close method

* Pass content area instead ot whole dialoag to ready CB

Author: nagmat84