Server mockup. Email module working with server mockup. Navigation.
This patch contains:
- Mockup for the requests to the server
- Remove mocks from email module
- Defer to scripts in fxa_module.html
- Navigation working
- Fix error overlay
Merge pull request #21 from borjasalguero/fxa_proposal_complete2

Email module updated. Server mock added.
Hook up the reset password link to be processed.

* Backend is faked for now, needs hooked up to IAC client.
* An error screen is displayed if fake backend request fails.
* setState has been added to fxam_states.js which allows "out of band" state changes.
* Added new strings which use the naming convention in PR #22