Update default Country document installation
Update test on Country document
Move methods from TaxManager to PriceManager

Add support for tax rounding strategy in cart / order total amount calculations
Merge pull request #766 from inthause/documents

Add support for tax rounding strategy in cart
Merge pull request #767 from fredericbonjour/Admin

New layout for Rbs/Website plugin and refactoring of "in-place" selection for pickers.
Add management of Cart filters

Remove BillingArea 'code' property
Add ProcessManager on CommerceServices
Add Cart filters on Rbs_Price_Fee document
Merge pull request #771 from inthause/documents

Add management of Cart filters
Fixes #769 (creation and edition from pickers).
Cleanup (removed jstree, "cascade*" methods, ...)