Settings: add central slim ActionListViewSettings class back...

as well shortcutpicker helper and several other stuff which is needed
for nearly every feature we have regarding navigation or shortcuts.

Imported from kk

changes:
- Renaming to be inline with fwb part
- code cleanup
- disabled code where features are not present till now

NOTE: This patch from graphics group is needed as well
      https://gerrit.slimroms.net/#/c/19987/2

Change-Id: I7b01e9ff685880c892807a8048aefad5af0c96b1
Settings: materialize grabber icon

Change-Id: I74908674c8d6b5e5f3fbca8e54778c8d9d9dd6b7