Fixed misconfigurations in shipping DCA
Added descriptions for labels
Use Haste\Weight to calculate weight of products
Added minimum and maximum cart weight to flag shipping method
Updated for Haste 3.0
Weight units are now in Haste 3.0
Fixed missing class in namespace
Added description for flat price shipping
Products were added twice to the scale
Added group shipping method
Merge branch 'feature/shipping' into develop
Fixed array_slice on ArrayObject
Fixed missing class in namespace
Use chosen for product type selection