spiked out some basic html for landing pages, split into two:

one template for agencies with offices, one for everything else.
added 'parent' agency data onto agencies who have one, used for
breadcrumbs and in the API.
getting the grid in order, fixing up breadcrumbs

also added a default description for offices with none.
Added first pass at About This Project copy
Remove unused anchor id
other unused anchor id
Add in processing time details when available
show integer days
add font awesome and figure out which glyphs do what
Lots of actual styling to get stuff in place
fix test, using int now for API (this should change)
style the suboffice list, make most links underline on hover
Merge pull request #233 from 18F/agency-landing-2

Built out agency/office landing pages, added About page