[FIX] Adapt product variants in order to show internal code and ean13 #2772

[IMP] Typo
[FIX] Fix inheritance in point_of_sale views + ean visible on creation + landed costs views

[IMP] Set custom EAN not visible when multiple variants

[IMP] Change landed costs views + make ean visible upon creation
Merge pull request #2827 from odoo-dev/8.0-eanproductviews-2772-jco

8.0 eanproductviews 2772 jco