For example, switching pages in home should only have scale and alpha animations, but a "translate y" animation shows. This is because Data Binding is triggered later (like "in the next frame"), causing the animation runs before view attribute changes.
This commit introduces WindowInsetsHelper class and use it to handle all window insets. With the help of LayoutInflaterFactory from the previous commit, we can control insets behavior by adding our attributes to the XML and anything is done by WindowInsetsHelper class.
As changes are highly coupling, this commit also contains new ItemDecoration for lists, replacing the random combination of padding and empty drawable. And "fixEdgeEffect" extension for RecyclerView, making edge effects respect padding.
The FlashActivity has been removed and all of it's functionality has been transferred to the FlashFragment.
The FlashFragment needs to be however launched in a different way than the activity using the MainActivity's stub and so seemingly massive changes had to be made.
Notably the RemoteFileService didn't seem to be calling Service.startForeground(), which has been crashing the application due to the system requirements, so that's been fixed.
