Bug 154828 Item from library contant user properties can't delete
Details: Item from library contant user properties can't delete Step: 1.New a library. 2.Add a label and add a user properites. 3.Public the library. 4.New a report design and use the library 5.Drop the label from library explorer into layout. 6.Try to delete it. Actual result: The label from library contant user properties can't be delete. Exception reuslt: The label can be delete.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentCommand.java
if ( DesignElement.EXTENDS_PROP.equalsIgnoreCase( propDefn
					.getName( ) )
					|| StyledElement.STYLE_PROP.equalsIgnoreCase( propDefn
							.getName( ) ) )
				continue;
			if ( propDefn.getTypeCode( ) == PropertyType.ELEMENT_REF_TYPE
					|| propDefn.getTypeCode( ) == PropertyType.STRUCT_REF_TYPE )
			{
				Object value = element.getLocalProperty( module,
						(ElementPropertyDefn) propDefn );
				if ( value != null )
				{
					if ( ( value instanceof StructRefValue )
							|| ( (ElementRefValue) value ).isResolved( ) )
					{
						TemplateParameterDefinition definition = null;
						if ( value instanceof ElementRefValue )
						{
							ElementRefValue templateParam = (ElementRefValue) value;
							if ( templateParam.getTargetElement( ) instanceof TemplateParameterDefinition )
								definition = (TemplateParameterDefinition) templateParam
										.getTargetElement( );
						}
						try
						{
							
							
							PropertyCommand cmd = new PropertyCommand( module,
									element );