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
*            the module
	 * @param propName
	 *            the name of the property to get
	 * @return the property value as a double. Returns 0 if the property is not
	 *         defined, or cannot convert to a double.
	 */
	public double getFloatProperty( Module module, String propName )
	{
		ElementPropertyDefn prop = getPropertyDefn( propName );
		if ( prop == null )
			return 0;
		PropertyType type = MetaDataDictionary.getInstance( ).getPropertyType(
				prop.getTypeCode( ) );
		Object value = getProperty( module, propName );
		if ( value instanceof Double )
			return ( (Double) value ).doubleValue( );
		return type.toDouble( module, value );
	}
	/**
	 * Gets the value of a property as a boolean.
	 * 
	 * @param module
	 *            the module
	 * @param propName
	 *            the name of the property to get
	 * @return the property value as a boolean. Returns false if the property is
	 *         not set, or not defined, or cannot convert to a boolean.
	 */
	public boolean getBooleanProperty( Module module, String propName )
	{