Bug 148761 Unable to copy a report item from template to report
Steps: 1. Create a template, add a Text item "t1" or others 2. Create template item using "t1" 3. Double click the template item and we get a report item again. 4. We copy the item, paste to another report file. Expected: the text item can be copied. Actual result: Nothing happened, not copied and no error msg.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementRefPropertyType.java
if ( !targetDefn.isKindOf( target.getDefn( ) ) )
			throw new PropertyValueException( target.getName( ),
					PropertyValueException.DESIGN_EXCEPTION_WRONG_ELEMENT_TYPE,
					PropertyType.ELEMENT_REF_TYPE );
		
		return refValue;
	}
	/**
	 * Converts this property type into a string, return the element name of the
	 * referenced element.
	 * 
	 * @return the element name of the referenced element, return
	 *         <code>null</code> if value is null;
	 */
	public String toString( Module module, PropertyDefn defn, Object value )
	{
		if ( value == null )
			return null;
		if ( value instanceof String )
			return (String) value;
		ElementRefValue refValue = (ElementRefValue) value;
		if ( !StyledElement.STYLE_PROP.equals( defn.getName( ) ) )
		{
			return ReferenceValueUtil.needTheNamespacePrefix(
					(ReferenceValue) value, module );
		}
		return refValue.getName( );
	}
	/**