Bug 131258 NewOdaDataSet is created when drop dataset from data explorer into layout in library
Details: NewOdaDataSet is created when drop dataset from data explorer into layout in library Setp: 1.New a library 2.Create a datasource and dataset 3.Drop dataset from Actual result: A new dataset named NewOdaDataSet is created. Exception result: The dataset is unnecessary to be created
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/palette/BasePaletteFactory.java
{
					text = AUTOTEXT_LABEL_PAGE
							+ "<value-of>pageNumber</value-of>"; 
					textItemHandle.setContentType( DesignChoiceConstants.TEXT_CONTENT_TYPE_HTML );
				}
				else if ( IReportElementConstants.AUTOTEXT_DATE.equalsIgnoreCase( type ) )
				{
					text = "<value-of>new Date()</value-of>"; 
					textItemHandle.setContentType( DesignChoiceConstants.TEXT_CONTENT_TYPE_HTML );
				}
				else if ( IReportElementConstants.AUTOTEXT_CREATEDON.equalsIgnoreCase( type ) )
				{
					text = AUTOTEXT_LABEL_CREATE_ON
							+ "<value-of>new Date()</value-of>"; 
					textItemHandle.setContentType( DesignChoiceConstants.TEXT_CONTENT_TYPE_HTML );
				}
				else if ( IReportElementConstants.AUTOTEXT_CREATEDBY.equalsIgnoreCase( type ) )
				{
					text = AUTOTEXT_LABEL_CREATE_BY;
					String author = reportHandle.getAuthor( );
					if ( author != null )
					{
						text += author;
					}
					else
					{
						String pluginVersion = (String) ReportPlugin.getDefault( )
								.getBundle( )
								.getHeaders( )
								.get( org.osgi.framework.Constants.BUNDLE_VERSION );