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/util/ModelUtil.java
String errorCode = ( (LibraryException) parserException
							.getException( ) ).getErrorCode( );
					if ( errorCode == LibraryException.DESIGN_EXCEPTION_LIBRARY_INCLUDED_RECURSIVELY
							|| errorCode == LibraryException.DESIGN_EXCEPTION_DUPLICATE_LIBRARY_NAMESPACE )
					{
						return parserException.getException( );
					}
				}
			}
		}
		return null;
	}
	/**
	 * Checks whether the input stream has a compatible encoding signature with
	 * BIRT. Currently, BIRT only supports UTF-8 encoding.
	 * 
	 * @param inputStream
	 *            the input stream to check
	 * @param fileName
	 *            the design file name
	 * @return the signature from the UTF files.
	 * @throws IOException
	 *             if errors occur during opening the design file
	 * @throws SAXException
	 *             if the stream has unexpected encoding signature
	 */
	public static String checkUTFSignature( InputStream inputStream,
			String fileName ) throws IOException, SAXException
	{