This PR adds:
* Keyboard events
* Boxshadow
* Filtering by unread notifications
* Increases smartness for logic around when to prompt whether or not the
functionality is useful
This PR adds more capabilities to the notification UI. Including:
* Displaying new notification types
* Update visual expression based on whether it's read or not
* Mark items as read
* Follow the items link to go to the notification destination
* Cleanup and styled components
