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
/**
	 * Validates the element name.
	 * 
	 * @param module
	 *            report design
	 * @param targetDefn
	 *            definition of target element
	 * @param name
	 *            element name
	 * @return the resolved element reference value
	 * @throws PropertyValueException
	 *             if the type of target element is not that target definition,
	 *             or the element with the given name is not in name space.
	 */
	private ElementRefValue validateStringValue( Module module,
			ElementDefn targetDefn, PropertyDefn propDefn, String name )
			throws PropertyValueException
	{
		name = StringUtil.trimString( name );
		if ( name == null )
			return null;
		IModuleNameSpace elementResolver = module
				.getModuleNameSpace( targetDefn.getNameSpaceID( ) );
		ElementRefValue refValue = null;
		
		refValue = elementResolver.resolve( name, propDefn );
		assert refValue != null;
		
		if ( !refValue.isResolved( ) )
			return refValue;