Added Responsive.gs
Swapped out responsive.gs for Frameless
Fixed styles.php
Added SCSS_cache to .gitignore
Fixed scss import.
Initial markup of responsive layout.

Much SASS was learned.
Simplified SASS.

Defined multiple widths as percentages instead of giving pixel values
for each step.
Changed <main> to <div id="main">

<main> tags seem to be unsupported by iOS6 Safari.
Merge branch 'ui_dev'