Update icons.
Update pop button icon again.
Remove debug code (CYAN loading color).
Fix for cancel return from MultiGallery.
SlideListActivity should not be parent of MultiGallery.

This is like ACTION_PICK, but id.home navigation do not call onActivityResult.
It's strange.
Ver 2.0.
Refactoring: extract WhiteBoardCastActivity data to model.
Transition from pop model to slide choose model. Undo is NYI. Performance is also not good enough.
Implement Undo-Redo of slides.
FIX: screen decoration is not count correctly for getSize.
Change UI flow as not be able to edit slides after start recording.
Create thumbnail and use it.
Fix for large device no-menu problem.
Update icons.
Two more icon update.
Ver 2.1