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/Module.java
{
		String designPath = getFileName( );
		File designFile = new File( designPath );
		if ( !designFile.exists( ) )
			return null;
		if ( designFile.isFile( ) )
			return designFile.getParentFile( );
		return null;
	}
	/**
	 * Finds a custom color by name.
	 * 
	 * @param colorName
	 *            the custom color name
	 * @return the custom defined color that matches, or <code>null</code> if
	 *         the color name was not found in the custom color palette.
	 */
	public CustomColor findColor( String colorName )
	{
		StructureDefn defn = (StructureDefn) MetaDataDictionary.getInstance( )
				.getStructure( CustomColor.CUSTOM_COLOR_STRUCT );
		return (CustomColor) StructureRefUtil.findStructure( this, defn,
				colorName );
	}
	/**
	 * Finds a config variable by name
	 * 
	 * @param variableName
	 *            the configure variable name
	 * @return the config variable that matches, or <code>null</code> if the