Revert "Added initial bits of the demo application (lights out)."

This reverts commit 0b85c4b6ffa838c556c9a8e8753f631fdd703e5d.
Accidentally added stuff.
Revert "Accidentally added stuff."

This reverts commit e68a4ceb23c7d3462e40433bd65cc6f7334af7af.
Revert "Revert "Added initial bits of the demo application (lights out).""

This reverts commit ff37427f9fe84d970fdae373ad2ea22e0b4807a2.