[JBIDE-13250] making sure correct connection is selected

Made sure the correct connection is looked up. Cleaned and refactored
the whole wizard page.
[JBIDE-13235] allow embedding mysql and postgresql at the same time
JBIDE-13476: Remove bootstrap profile
[JBIDE-12381] added tracing facility to the openshift-client bundle

Added the ability and made sure the tracing option show up in the eclipse
preferences (via org.eclipse.ui.tracing extension point)
[JBIDE-13494] bump plugin- and feature-versions 2.4.0->2.5.0
[JBIDE-13494] bump plugin- and feature-versions 2.4.0->2.5.0
[JBIDE-13496] remove tests ensure mutual exclusivity of Postgres and MySQL
Merge branch 'jbosstools-4.1.0.Alpha1x'