repository facade mojo is too verbose by default when naming the site type in generated index.html

Generated index.html used to use "Nightly Build", "Development Milestone" or "Stable Release". Now it says "

This is the This is an Eclipse update-site/p2 repository which contains build artifact for component org.jboss.tools.site.webtools Update Site for JBoss Tools - Web Tools.

So either need a different site template for aggregate sites vs. single component sites, or we need to revert the template to use the simpler site type (quality) description as before.