Refactor and spanish

This feature branch
- Implements v1 Spanish-language Splash pages for CA, MO, TX
- Updates the universal stylesheet to be optimized for mobile. The CTA & Phone number should be above the fold across devices in Portrait mode, and close enough in landscape.

It does not:
- Substantially alter the current Splash page design
- Include updated images (images with text) for Spanish language pagse
- Touch the "form" page that @lippytak produced.