[2/2] Settings: configurable rotation

Base: https://gerrit.omnirom.org/#/c/4526/

Change-Id: Ib0da7bfdf374eafeef24fb0b7c90464458d531b3
[2/2] Settings: Lockscreen Notifications

PS6:
    [2/2] Lockscreen Notifications: make offset top user configurable & add privacy mode

PS7:
    Fix Derp
PS8:
    Rebased

Change-Id: Ic66c0ff9d36bc390f5a434559468fe3752faf285