Product screens now open in a more visual card layout by default and show sale prices more prominently. Less useful or slow-to-load details such as volume, gross weight, and forecast quantity were removed to make product browsing simpler and faster for everyday users.

- Set default view to kanban instead of list
- Remove volume and gross weight
- Add Sale Price
- Remove forecast quantity. This is too complicated for most of the people
  and this field is slow to compute because it has to search on the stock moves

Product labels can now be printed directly from product templates, not only from product variants. This helps businesses that do not use variants generate labels more easily, while the underlying label report was also cleaned up.

The report is printable from the product_product. But if the variants
are not activated, it's impossible to print it.