Payments made when authenticated will be donations, and not connected to customer in any way.
Merge branch 'develop' into feature/billing-no-authenticated-payments
Merge branch 'develop' into feature/billing-no-authenticated-payments

Conflicts:
	billing/config/locales/en.yml
This won't necessarily preserve exact formatting (for example, if there are multiple blank lines in a row), but seems standard way to do it and maybe sufficient?
Merge branch 'bugfix/4786_ticket_comment_format' into develop
Update translation to reflect what you can actually change in your account.
enable billing engine by default, consolidate APP_CONFIG[:payments] and APP_CONFIG[:braintree] into APP_CONFIG[:billing][:braintree]
fixed billing tests (added dummy billing hash to config, include required testing gem phantomjs-binaries)