Settings: Make QS Tile Random Color off by default

Change-Id: Iac5b9477ee556dbc8d3e93696705991245da7c7b
Add a quick SELinux mode toggle

There's no way to make it persistent, by design. This is purposefully
undocumented and meant to test policies at this stage.

Change-Id: Ic79ed773b199b68fee15f94acd2107a5ad20dc25