[2/2] Settings: option to disable power menu on lockscreen

Base: http://gerrit.vanir.co:8080/#/c/541/

Change-Id: Iee4c0b5100a5b22cc4452f7f765247d748f1217a
Signed-off-by: bart452 <bart4524@gmail.com>
Merge "[2/2] Settings: option to disable power menu on lockscreen" into kk44