Support for hiding the popover

[Saheb]

Once the action is performed, it should be possible to call hide/close/killPopover. At the moment, it's only possible to destroy.

[Saheb]

I just moved killPopover into the return statement, that seemed to expose that function and works as expected. Not sure if that's the right way.

But, I think that should be the default behavior across sharers, what do you think about that?

[jpoles1]

I also think this would be a helpful feature! Can you explain a bit more how you got it done @Saheb?