add JBDS 8 Beta2 and relabel Stand-Alone Installer + zips (DEVELOPER-733)
update links to jars and zips using GG URLs from Chris O'Brien ( https://engineering.redhat.com/rt/Ticket/Display.html?id=302857 ) [ DEVELOPER-733 ]
DEVELOPER-733 use Download Manager short URLs
Merge pull request #300 from pmuir/DEVELOPER-733

Developer 733