Add "Enable Widgets" option

The "Enable Widgets" option should show up under gesture unlock.

Change-Id: I3a08413a147312e0dd1a7528e58a4e64d9793ebf
Settings: MediaScanner behavior on boot (3/3)

Port:
https://github.com/SlimRoms/packages_providers_MediaProvider/commit/f5ccf8e7f688b3f0e4cd1acc1d5ee3af6d71b390

Lets you enable/disable/ask (with a notification) media scanning on boot.
Can speed up boot and reduce initial boot lag from MediaScanner

- added xxhdpi icon
- no need for multiuser due that this should be a one time set
  general option set by the owner of the device

Change-Id: Iad0b72f8b653b3d567b27de3ccf5c6cfb07e40ed
remove ota & ktweaker

Change-Id: I01d8c79622e9013e885ed9bd3dbb2ea91432d13e
Heisenberg welcome

Change-Id: I89e03ddd7aff8d494b5966f6822b3788da8647d5
restore plot animation

Change-Id: I1b4cc4e6b58b6fb424e4b7b399da0b226f604efa
restore plat animation (kenzolo)

Change-Id: Ic341142858b00abad2327b3dd3d277116c78f2d4