Remove some icons that don't do anything
Contacts: add search support
Fix the effect of clicking on contacts
drawer: have a shadow
Re-enable scrolling
Disable focus outline on contacts, it's distracting
Add ugly placeholder launch screens

Unfortunately, neither of these is very effective: the coloured
background is displayed for a short time, then the screen clears
to white, then we eventually get our desired content. I think
this means that Polymer is taking a significant time to load;
so if we want placeholder content it will probably have to be HTML.

It seems we also get the portrait configuration (blue) in either
orientation, never the landscape configuration (red).