Bug 148761 Unable to copy a report item from template to report
Steps: 1. Create a template, add a Text item "t1" or others 2. Create template item using "t1" 3. Double click the template item and we get a report item again. 4. We copy the item, paste to another report file. Expected: the text item can be copied. Actual result: Nothing happened, not copied and no error msg.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
*/
	public static List filterLayoutTasks( List tasks )
	{
		List retList = new ArrayList( );
		Set elements = new LinkedHashSet( );
		for ( int i = 0; i < tasks.size( ); i++ )
		{
			RecordTask task = (RecordTask) tasks.get( i );
			if ( task instanceof LayoutRecordTask )
			{
				DesignElement compoundElement = (DesignElement) ( (LayoutRecordTask) task )
						.getTarget( );
				if ( !elements.contains( compoundElement ) )
				{
					retList.add( task );
					elements.add( compoundElement );
				}
			}
		}
		return retList;
	}
	/**
	 * Returns the first fatal exception from the given exception list. The
	 * fatal exception means the error should be forwarded to the outer-most
	 * host module and stops opening module.
	 * 
	 * @param list
	 *            the exception list
	 * @return the fatal exception, otherwise, return null.
	 */