Verbose text in advanced search was wrong.
Wrong field was used in case of GE or LE operators.

Conflicts:
	org.eclipse.scout.rt.shared/src/org/eclipse/scout/rt/shared/data/model/DataModelAttributeOp.java

Change-Id: Ief81170fa63b720257fc04cd5ba2a2e32b5d5291
Reviewed-on: https://git.eclipse.org/r/35577
Tested-by: Hudson CI
Reviewed-by: Bruno  Koeferli <bruno.koeferli@bsiag.com>
Reviewed-on: https://git.eclipse.org/r/35743