Updated mediawiki/extensions
Project: mediawiki/extensions/DonationInterface  6795594cbc8e7566c06e9dee7e550e5e6f3fcdb5

Taking control of Amazon's payment_submethod.

Also moving some amazon-specific logic out of DonationData.

Change-Id: Ic0eeb01bc9d4c59cfc2e036cca95e3992acd251c