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/api/elements/SemanticError.java
*/
	public static final String DESIGN_EXCEPTION_COLUMN_PASTE_DIFFERENT_LAYOUT = MessageConstants.SEMANTIC_ERROR_COLUMN_PASTE_DIFFERENT_LAYOUT;
	/**
	 * Error code indicating the a cascading parameter is not typed as
	 * "dynamic".
	 */
	public static final String DESIGN_EXCEPTION_INVALID_SCALAR_PARAMETER_TYPE = MessageConstants.SEMANTIC_ERROR_INVALID_SCALAR_PARAMETER_TYPE;
	/**
	 * Error code indicating template parameter definitions have no "type"
	 * information.
	 */
	public static final String DESIGN_EXCEPTION_MISSING_TEMPLATE_PARAMETER_TYPE = MessageConstants.SEMANTIC_ERROR_MISSING_TEMPLATE_PARAMETER_TYPE;
	/**
	 * Error code indicating the structure referred is not found.
	 */
	public static final String DESIGN_EXCEPTION_INVALID_LIBRARY_REFERENCE = MessageConstants.SEMANTIC_ERROR_INVALID_LIBRARY_REFERENCE;
	/**
	 * Error code indicating default element or value element of template
	 * parameter definition is incompatible the "allowedType" property defined
	 * or the element types of default element and value element are not the
	 * same.
	 */
	public static final String DESIGN_EXCEPTION_INCONSISTENT_TEMPLATE_PARAMETER_TYPE = MessageConstants.SEMANTIC_ERROR_INCONSISTENT_TEMPLATE_PARAMETER_TYPE;
	/**
	 * The property binding refers a non-existing element.
	 */
	public static final String DESIGN_EXCEPTION_INVALID_PROPERTY_BINDING_ID = MessageConstants.SEMANTIC_ERROR_INVALID_PROPERTY_BINDING_ID;
	/**
	 * The element is not in the design tree, so it is forbidden to set the property binding.
	 */