More updated styles
some cleanup
add custom image sizes file and 'donor_logo' image size.
Set up some donors stuff.
Merge branch 'donors' into styles
Add respond.js
make urls relative.
Sponsors page styles
Merge branch 'styles' into donors
Set up donor levels.
add CTA button to home page banner - "update" font for main content area
Fix footer padding weirdness
fix home page cta button font
update logic in sections template part. fix a few styles.
Fix donor styles for different levels.
Merge branch 'home_page' into donors