JBTIS-279 - JBDSIS 7.0.2/JBTIS 4.1.5 blog/download update

Maintenance release only - added link to release notes.
you should never use absolute tools.jboss.org urls.

use relative - then it will work no matter where you build the site.

like: link:/features/bpel.html[BPEL Designer] instead.