Exclude uninstalled products from upgrades view.

When a product is uninstalled with quickinstaller or the addons control panel,
the changes are reverted but the generic setup profile version is kept.

We now also ask the quickinstaller if the product of each profile is installed
and exclude profiles which belong to an uninstalled product.
Merge pull request #55 from 4teamwork/jone-quickinstaller

Exclude uninstalled products from upgrades view.