This switching Folio and Halcyon to define their settings as a
containment config so that it fits in with the other containment
options.
This removes the convoluted maze of nested settings windows due to
wrapping the containment settings with a custom settings window around
it.
Add a settings page to halcyon, which allows for toggling whether the
wallpaper is blurred and double tapping on the homescreen to lock the
device. This also does a bit of refactoring for folio and halcyon to
share the same wallpaper blurring item.
