Merge branch 'hotfix/1.3.11'
Starting 1.3.12 hotfix branch
Fixed encoding issues in Postfinance payment method
Fixed compatibiliy issues with PHP 5.2
Removed duplicate DCA configuration
Added IsotopeBackend::getAllowedProductIds()

This method returns the allowed product IDs for the current backend user.
Isotope 1.3.12 release
Merge branch 'hotfix/1.3.12' into release/1.4.0
Fixed compatibiliy issues with PHP 5.2
Pass the collection to the template in `getProducts()`
Translation of attributes should be done when loading DCA
Improved german label for tax application on guests
A tax rate can now be applied to multiple countries
Updated changelog
Check for array return value in the hook
Payment modules did not correctly handle the auto_item parameter (fixes #113)
ProductList-noFilter message is shown when keywords are used (fixes #120)
Store tax free price in collections.

Necessary for locked products, and for future statistics.
Removed PaypalPayflowPro and Cybersource payment methods. They were not maintained anymore.
Updated order status in payment module, so the emails are sent