Cleanup static IDP-related views, and add some basic tests.
Change provision/signin pages to be simple placeholder text.

We really don't want people trying to sign into this thing like it's
a normal BrowserID IdP.
Merge pull request #252 from mozilla/rfk/static-views-cleanup

Cleanup static IDP-related views, and add some basic tests.
wip on db api
more WIP on db api
passing integration tests
reorg. renamed models dir to tokens
token.create should take a uid again
client works again with new db api
fixed tests deleted obsolete ones. need moar token tests
updated dependencies