[IMP] Add search filters in inventory analysis

This branch adds 3 filters to the inventory analysis : available products, products out of stock, the products with negative stock.
The change is not needed in v8 because only available products are displayed.
Supersedes  https://code.launchpad.net/~numerigraphe-team/ocb-addons/7.0-filter-zero-inventory-analysis/+merge/210216