refactor: Add view for adding a single product to site inventory. Split out site_delete to a stand-alone page. Change name of product_add_to_site_inventory to products_add_to_site_inventlry to reflect that this is for multiple products.
refactor: Add view for adding a single product to site inventory. Split out site_delete to a stand-alone page. Change name of product_add_to_site_inventory to products_add_to_site_inventlry to reflect that this is for multiple products.

grovesr/django-ims,grovesr/django-ims,grovesr/django-ims