Bug 122850 Table/list should not be able to be inserted in Master Page mode.
Description: Table/list should not be able to be inserted in Master Page mode. Steps to reproduce: 1. New a report and transfer to Master Page mode. 2. New a datasource and dataset 3. Drag a list/table to page header/footer, bind it to dataset and drag some columns inside. 4. Save and preview Expected result: Insert list/table item in master page should be forbidden. Actual result: They are allowed and preview showed "undefine" in page
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
* Part of: The name system.
	 * 
	 * @return Returns the name.
	 */
	public String getName( )
	{
		return name;
	}
	/**
	 * Sets the element name. The caller must have cleaned up any references to
	 * the old name, have changed any name spaces as needed, have verified the
	 * name, and so on.
	 * <p>
	 * Part of: The name system.
	 * 
	 * @param newName
	 *            The name to set.
	 */
	public void setName( String newName )
	{
		name = newName;
	}
	/**
	 * Returns the container element.
	 * <p>
	 * Part of: The containment system.
	 * 
	 * @return Returns the container.
	 */
	public DesignElement getContainer( )