- more contrasted primary palette;
- white toolbars for list and detail views;
- modules navigation always visible;
- wrapped detail views into a md-card;
- moved preferences button to the sidenav;
- moved the sidenav toggle button to the top toolbar;
- new "flip" visual effect when looking at the raw source of cards and
messages.
The SASS has been simplified so that different themes can be applied by
only using the $mdThemingProvider serivce.
The resulting design is more "Materialized" and less prone to the
future changes of Angular Material.