Dreamliner: Reorganise the external repo [1/2]

The refactoring consists in splitting all the stuff
in two separate folders:
- settings;
- systemui.
By doing so we make resources and source code separate
for all the packages that will inherit from here.

Change-Id: I79bf88c17a7698fda373dacb2b854335a607f5af
68 files changed
tree: c7ed444bbc8d8c51c334abbf2847e1932a436184
  1. systemui/