Add carousel

Use cdns for all bootstrap assets. Update to latest version. Add one carousel style to be tweaked.
adds header section and buttons to each content block
Merge pull request #7 from codeforamerica/add-carousels

Add carousel
Embed cute pets map
Merge pull request #5 from codeforamerica/add-cuties-map

Embed cute pets map
Merge pull request #8 from codeforamerica/section-headers

adds header section and buttons to each content block
adds team section
fixes img urls