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/ElementDefn.java
* 
	 * @param propName
	 *            The style property name to make visible.
	 */
	void addStyleProperty( String propName )
	{
		assert !isBuilt;
		if ( stylePropertyNames == null )
			stylePropertyNames = new ArrayList( );
		stylePropertyNames.add( propName );
	}
	/**
	 * Gets the name space that holds this type of element.
	 * 
	 * @return The name space ID.
	 */
	public int getNameSpaceID( )
	{
		return nameSpaceID;
	}
	/**
	 * Gets the name option that says how the element type handles names. One of
	 * the following defined in {@link MetaDataConstants}:
	 * <ul>
	 * <li>{@link MetaDataConstants#NO_NAME}-- The element cannot have a name.
	 * (Probably not used.)</li>
	 * <li>{@link MetaDataConstants#OPTIONAL_NAME}-- The element can
	 * optionally have a name, but a name is not required.</li>
	 * <li>{@link MetaDataConstants#REQUIRED_NAME}-- The element must have a
	 * name.</li>