JBIDE-16135 EL Content Assist in Java Editor: Make Content Assistant Additional Info window to support URLs.

JUnit tests were fixed after changing the Content Assist Additional Info's and Tooltip's (Hover's) content.

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
JBIDE-16136 Reorganize jst.test plugins
JBIDE-16121 org.jboss.tools.jsf.vpe.jsf.test failure