JBIDE-12973 remove reddeer repo definitions from test poms

Now that RedDeer gets published to download.jboss.org and the repo is
defined in our tests/pom.xml, it is no longer necessary to add
the repo from the different poms.
Runtime-detection tests of EAP 5.1.0 added
Runtime-detection tests of SOA-P 5.2.0 added
Beans.xml as-you-type validation test implemented
JBIDE-12973 Remove the only reddeer version reference found in a manifest

This was discussed with jpeterka (it's his test). We agreed that it is no
longer necessary to specify the version since we the version will be given
by the repo definition in the root pom.
JBIDE-13456 Move palette implementation from vpe module to jst module
Removes zest extension
Remove zest from exported packages
Workaround is no longer needed - relevant JIRA was verified