Data from the form is sent to Braintree
Show braintree validation errors in the UI
Merge branch 'develop' into send-data-to-braintree

Conflicts:
	app/controllers/braintree_accounts_controller.rb
	app/models/community.rb
	app/models/payment_gateways/braintree_payment_gateway.rb
	app/services/braintree_service.rb
Fix showing of gateway terms
Fix tests
Fix also cucumber tests
Merge pull request #170 from sharetribe/send-data-to-braintree

Send data to braintree and show returned error messages in the UI