Add "target product" metadata to quickstarts

Quickstart readmes define some metadata like https://raw.github.com/jboss-jdf/jboss-as-quickstart/master/bmt/README.md. We would like to add a "Target Product:" that would indicate what product the quickstart is targeted at.

We need to update the site (which generates the table) to include the product, and also the script in dist/ which generates the table of contents for the zip.