port active display: allow apps to be excluded from active-D

author clark scheff https://github.com/0xD34D

Change-Id: I6a238ff338ece3b127cf734a90fa7878c87a8b8c
quicksettings: screen timeout tile with never option

Change-Id: I82d4d2e2ee496bedc46e9a5f65335bdb743ea7c5
PS2: make display settings summary reflect tile settings
Timeout: 0 = never

Change-Id: I66989227edbce57d836e0aa2d710c2eb44d88a59
If anyone wants their phone to stay on indefinitely, their phone will have to be plugged in, so we already have an infinite display timeout checkbox in dev settings.

Change-Id: Ib26580a0782fe00d7e500f32b9a5cee265196ec0
enable the alpha slider for clock and navbar color pickers

Change-Id: I92979a711913662ae34ca367be08f7576644997e