Fixed flake8 and photo icon in product list view
Added test for update view and fixed list view
added column for ean in product list
uniformed layout width
fixed back button behavior
Product price fixed to be greater equal than zero
removed description label from product detail view
added -no products- label when there are no products
Test views reorganized
fixed no-products test
Added tests for filters in list view
added cancel button for create view
fixed bug introduced in cancel-button commit
Is now possible to order list view by purchse price and stock.
Added test for list view sort behaviour
changed ean field
Added tests for delete view and fixed list view
Added sidebar-elements and sidebar-extras blocks to the product list view
added ean uniqueness validator
Added some tests for the views