New home page.
Mobile home page.

Plus new assets!
Tablet home page.
Home page clean up.

- Styled footer.
- Improved mobile styles.
- Switched to local copies of Open Sans.
Merge branch 'dev' into marketing
Fixed IE 8 and dist build.
Merge pull request #296 from mozilla-services/marketing

New home page
Enforce request body limits. Closes #299.
Merge pull request #300 from kitcambridge/bug/limit-body-size

Enforce request body limits
Merge branch 'dev' of github.com:mozilla-services/FindMyDevice into refactor