Merge branch 'release/3.0.1.0' into develop
Limit results to product templates that are active

After _inherits was removed, the active field exists on both product and
template. However, if the template is inactive, the product cannot be
purchased. So it is better that it not be displayed.
Merge branch 'hotfix/3.0.1.1' into develop
Add further limiting to products without template

The domains have been added to the relationship table and a new
get_products method has been added for helping template designers.
Release version 3.0.2.0
Merge branch 'release/3.0.2.0'