Resize landing page photo to dimensions used on site
Merge pull request #162 from andrew-polk/feature/resizeLandingPhoto

Resize landing page photo to dimensions used on site
Create a preferences page accessible directly by url

The only preference so far is diverting production analytics.
Use trackLiveAnalytics, not trackAnalytics, for clarity

Users are not turning off analytics completely, just sending them to
the sandbox rather than production analytics project on segment.io.
This helps make that more clear.