Improves method documentation
Adds default value for number() view helper annotation
Don't notifiy the user if the service items couldn't be migrated
Improves getTaxRate() implementation
Calculates fixed and percent rebates according to tax rates
Merge pull request #761 from nsendetzky/master

Calculates fixed and percent rebates according to tax rates and don't notify the user if a service item in the basket couldn't be migrated