generate index page using siteTemplateFolder/index.html and changes to aggregate-site/pom.xml; rename aggregate-site/site.xml to aggregate-site/category.xml to allow new packaging type (eclipse-repository vs. deprecated eclipse-update-site); add .gitignore file; migrate content in aggregate-site/extra-repos.xml to aggregate-site/pom.xml (JBTIS-14)
add plugin repo for jboss maven2 tycho plugins