Remove Yelp header (no content in this section)

Yelp link was added in the contact section.
Remove empty blockquote tag

Looks like this was left behind after removing the Yelp review example
Keep indentation consistent
Add back contact section with header

It seems like this was removed by accident
Improve the html semantics of the Yelp section
Remove link to non-existant photos section
Add breathing room at bottom