Make sure that the views products_average_price and products_oldest_stock_unit_price always returns a row per product, also for not in stock items (references #801)
Make sure that the views products_average_price and products_oldest_stock_unit_price always returns a row per product, also for not in stock items (references #801)

Otherwise there are errors when getting product details for currently not in stock items...

berrnd/grocy,berrnd/grocy,berrnd/grocy,berrnd/grocy