Settings: Add option to scramble pin layout when unlocking (1/2).

Change-Id: I3e2c200a0a31d3c765831bc30280029a50c88051
Improve notification spam filter code.

- Follow coding style guidelines
- Replace dialog shown on click by adding the relevant information and
  the delete button to the item itself
- Minor layout tweaks
- Make the empty view more descriptive
- Add license headers

Change-Id: Ic685364087d6a093fdbb6a143a9c6ed78596b62b
Automatic translation import

Change-Id: I1f9fc1e3a15c77fd725c3cae8ab619199cdfe04a
Merge branch 'cm-11.0' of github.com:CyanogenMod/android_packages_apps_Settings into cm-11.0

Merged changes from upstream