Bug 201368 Support "Not In" operator in filter list
Description: After we support "IN" filter we should also support the "Not In" filter. Data part has already support the "Not In" filter, so hope model can support that operator in the filter operator list. Regards!
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/CssCommand.java
import org.eclipse.birt.report.model.api.activity.ActivityStackEvent;
import org.eclipse.birt.report.model.api.activity.SemanticException;
import org.eclipse.birt.report.model.api.command.CssException;
import org.eclipse.birt.report.model.api.command.CssReloadedEvent;
import org.eclipse.birt.report.model.api.css.StyleSheetException;
import org.eclipse.birt.report.model.api.elements.structures.IncludedCssStyleSheet;
import org.eclipse.birt.report.model.api.metadata.PropertyValueException;
import org.eclipse.birt.report.model.core.CachedMemberRef;
import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.css.CssStyleSheet;
import org.eclipse.birt.report.model.css.CssStyleSheetAdapter;
import org.eclipse.birt.report.model.elements.ICssStyleSheetOperation;
import org.eclipse.birt.report.model.elements.interfaces.IReportDesignModel;
import org.eclipse.birt.report.model.metadata.ElementPropertyDefn;
/**
 * Represents the command for adding and dropping css from report design or
 * theme.
 * 
 */
public class CssCommand extends AbstractElementCommand
{
	/**
	 * Construct the command with the report design.
	 * 
	 * @param module
	 *            the report design
	 * @param element
	 *            element.
	 *