Issues with back-end display and maintenance

-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.5.1
-- PHP version -- : 5.6.17
-- Browser(s) name and version -- : Firefox 47.0

In the course of populating a new site, we encountered some minor issues which could use improvement.

In category maintenance, the associated category image at times is not displayed when a filter (search term) is set. This can be seen on your demo site by showing all sub elements of "product category" and entering "auto" in the search box. The associated category, which has an image assigned will show the default "barcode.png" icon.

When copying a product record, the warehouse ID is not copied. I resolved this by modifying administrator/components/com_hikashop/helpers/import.php
though I suspect others will encounter the issue.

The word "edition" is misused in a number of areas, causing confusion, e.g. "Product Edition". This should likely be "addition", "editing", or "maintenance".

Though minor, the word "Comparison" is spelled incorrectly as "Comparaison" on custom fields page for the products table.