Bug 548393 - Legacy tooling shouldn't allow creating plain DMRs

Adapt renderers that use the CreateDomainModelReferenceWizard to filter
the plain DMR out of the set of collection of creatable DMRs before
opening the wizard.

Change-Id: I555dc6ecd2c5e46f3ab0d5996df796114d006492
Signed-off-by: Lucas Koehler <lkoehler@eclipsesource.com>
6 files changed