JBIDE-18399 - JBT website "What's new" page missing Alpha-Beta3 new features

Unset the 'archived: true' attribute for all alpha + beta versions of JBT 4.2.0
Also fixed broken tabs on download pages (active tab was not selected and tab
selection would not trigger a change in the browser location).
New Visual Editor FAQ
remove usage of JBDS
JBIDE-14035 one possible way to add the Browsersim stand-alone zip to the download pages for JBT
JBIDE-14035 or use a more stable URL for the latest standalone browsersim zip?
fix links to artifacts; had wrong zip in http://download.jboss.org/jbosstools/builds/development/jbosstools-4.2.0.CR2-browsersim-standalone/ and was pointing to jar, not zip, in Nexus