[Authorize.net] Include phone/fax in billTo, add retail data for card present
[Authorize.net] Adds unit tests for including `marketType` field in swipe transactions
Merge pull request #1423 from Shopify/authorize_net_phone_fax

[Authorize.net] Include phone/fax in billTo, add retail data for card pr...
Revert "Revert "Remove defunct Samurai gateway""

This reverts commit 292026e8e5ce78dcfdf8e6b781a7a3fd84fb8f3f.

Conflicts:
	test/unit/gateways/samurai_test.rb
Update CHANGELOG
Merge pull request #1425 from Shopify/remove-samurai-gateway

Remove samurai gateway
DIBS Payment Services

This commit is maintained separate until DIBS setup a sandbox.
Code by @maxwhite