tentative release 2.2.0
added tabs to template
added tab data fields to controller
reformated svea_fee model
cleaned up svea_invoice.tpl
controller and template ok
invoice fee is charged according to customer country
invoice fee can be disabled per country
states invoice fee country in invoice fee text
Documentation updated.
Merge branch 'feature/WEB-387' into develop
Bumped version to 2.2.0.
Merge branch 'release/2.2.0' into develop