Problems when creating BPEL Correlation Set

I discovered several issues during testing:

1. The WSDL property is created correctly but the PropertySelectorDialog does not detect the message part. This leads to "missing "type" or "element" attribute" validation error
2. The messages.properties file in the org.eclipse.bpel.validator.vprop package (used for error message localization) is empty
3. WSDL validator does not detect duplicate definitions of <property name="foo">
4. The message "Structure" tree widget in EditPropertyAliasDialog is only one line high - should display more of message structure
5. The overall workflow for creating correlation sets is overly confusing! This needs to be reworked.
6. WSDL validator is not checking <propertyAlias> elements correctly: propertyAlias can be defined using one of three ways:
1. message type and part specifications
2. XSD type definition
3. XSD Element definition