Rough in CSS from www.gittip.com and SCSS locally
Merge branch 'master' into rationalize-css
Reference base styles internally, not externally

This let's us use the font/color/etc. mixins we define in the main SCSS.
Format pages using styles from main CSS

This uses the col0 layout, with its H1/H2.
Add doc note on base style import
Split Sass file into multiple files
Fix up breadcrumbs

The root em changed with the move to basing our CSS on the CSS for the
main site. For now let's just specify in pixels, I guess. Modifying the
main site to use rems is a task in itself.
Fix up bottom nav

This makes the bottom nav match what we had before. Not sure why we had
to use content-sizing here (we just changed from rem to px, so I guess
that matters?). Probably would be better to use box-sizing everywhere,
but that would be a change in the main css, I think.
Tighten up homepage banner a tad
Fix homepage to use base www.gittip.com styles
Tweak vertical spacing on homepage content
Fix padding on right homepage column at low width
Merge pull request #2 from gittip/rationalize-css

rationalize CSS