Bug 210496 Add hasStyle property in reportItemModel extension point
When chart gets reportItem's properties by extending ReportItem, style properties are null. Hence, model needs to add hasStyle property in reportItemModel extension point
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/PeerExtensionLoader.java
protected boolean loadChoice( IConfigurationElement choiceTag,
				ExtensionChoice choice, PropertyDefn propDefn )
		{
			
			String name = choiceTag.getAttribute( NAME_ATTRIB );
			if ( !checkRequiredAttribute( NAME_ATTRIB, name ) )
				return false;
			
			String value = choiceTag.getAttribute( VALUE_ATTRIB );
			String displayNameID = choiceTag
					.getAttribute( DISPLAY_NAME_ID_ATTRIB );
			String defaultDisplayName = choiceTag
					.getAttribute( DEFAULT_DISPLAY_NAME_ATTRIB );
			choice.setName( name );
			if ( propDefn.getTypeCode( ) != IPropertyType.CHOICE_TYPE )
			{
				try
				{
					Object validateValue = propDefn.validateXml( null, value );
					choice.setValue( validateValue );
				}
				catch ( PropertyValueException e )
				{
					handleError( new ExtensionException(
							new String[]{value, propDefn.getName( )},
							ExtensionException.DESIGN_EXCEPTION_INVALID_CHOICE_VALUE ) );
					return false;
				}
			}
			else