Bug 151960 Library element popup menu display is wrong.
1:Creat a libray, add a table to this libray. 2:public this library. 3:Creat a report design. 4:Open the library explore, drag the table to the layout editor. 5:Select the table row, copy the selection row. 6:Select other row, clik the right button of the mouse to popup the menu . The result:Paste action and insert copied column action is highlight.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ColumnBandShiftAction.java
*            the new position
	 * @return the column destination position ready for the shift action
	 */
	private int adjustDestPosn( int posn, int newPosn )
	{
		int columnCount = adapter.getColumnCount( );
		if ( newPosn > columnCount )
			return columnCount;
		
		if ( ( posn == newPosn ) || ( newPosn + 1 == posn ) )
			return -1;
		return newPosn;
	}
	/**
	 * Moves one column band from <code>sourceColumn</code> to
	 * <code>destColumn</code>.
	 * 
	 * @param sourceColumn
	 *            the source column to shift
	 * @param destColumn
	 *            the target column to shift
	 * @throws SemanticException
	 */
	protected void shiftColumnBand( int sourceColumn, int destColumn )
			throws SemanticException
	{
		ColumnBandData data = getShiftData( sourceColumn );
		
		int newPosn = adjustDestPosn( sourceColumn, destColumn );
		if ( newPosn == -1 )