[2/3] OmniGears: Lockscreen tweaks

Base: https://gerrit.omnirom.org/#/c/4700/
Settings: https://gerrit.omnirom.org/#/c/4702/

PS6/7: lockscreen blur
PS8: Quick swipe is disabled by default.

4701/9

Change-Id: Ibc28347493408bd22daf5e76d3bcd2f57df3d4b4
We have our own disable-camera-setting

Change-Id: Ibc4b1c8bbb1b27bab88db34f2d5a07cbea474b57