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
|| ReportDesignConstants.CELL_ELEMENT
							.equalsIgnoreCase( type )
					|| ReportDesignConstants.GROUP_ELEMENT
							.equalsIgnoreCase( type ) )
				return true;
			return false;
		}
		/**
		 * Gets the allowed property types for the extensions.
		 * 
		 * @return the allowed property types for the extensions
		 */
		List getAllowedPropertyTypes( )
		{
			if ( allowedPropertyTypes != null )
				return allowedPropertyTypes;
			allowedPropertyTypes = new ArrayList( );
			Iterator iter = MetaDataDictionary.getInstance( )
					.getPropertyTypes( ).iterator( );
			while ( iter.hasNext( ) )
			{
				PropertyType propType = (PropertyType) iter.next( );
				int type = propType.getTypeCode( );
				switch ( type )
				{
					case IPropertyType.STRING_TYPE :
					case IPropertyType.NUMBER_TYPE :
					case IPropertyType.INTEGER_TYPE :
					case IPropertyType.DIMENSION_TYPE :
					case IPropertyType.COLOR_TYPE :