Add links to where we found the info

[livgust]

I think it'd be nice to be able to go to the website where we scraped the info. For example, maybe we say Wegman's has no availability but we have a link that will take you to their landing page so you can check it out yourself if you want. In this issue, we'd be adding that link to all locations.

If you tackle this issue, please create a front-end issue as well to display this information.