migrate bug fix
(cherry picked from commit 8d427cab411072d17ff8117ea77db6d7589f5dc2)
Update currency index to use spree 2.0 conventions
Updated Currency edit to match 2.0 conventions
Update new currency to match 2.0 conventions
Updated converter section to spree 2.0
Fixes for 1.3
Fix views.
update test
Use raw amount for shipping.

If we don't use the base currency here, the currency conversion will be done twice.
fix separator/delimitor issue with EU prices
Spree 2.x updates from @pronix

Actual changes from commit 0468e9a by @pronix
Reverted author to origin and merged readme files.
Cleanup specs.
Cleanup and spree i18n namespace.