Remove parts/headers.php template, not used
The spine stylesheet is already enqueued by the parent
Move contents of sand.css to the child theme's stylesheet

This will prevent an extra HTTP request to the other stylesheet
Remove sand.css, as this stylesheet is now in style.css
Quotes around fonts.googleapis.com URL in CSS
Merge pull request #19 from washingtonstateuniversity/update/theme

[PR] Reduce unnecessary HTTP requests