Displays details at admin payment page
Moves format_xml to a helper so LogEntries can be rendered
Forces format_xml encoding to UTF-8
Stores transaction id (tid) on payment.response_code, to be in conformance with Spree method signatures used in capture / cancel operations
Captures an authorized payment via Admin interface
Updates payment view to display TID from payment.response_code
Removes deprecated view (unecessary since cielo_callback were refactored to be independent from update action)
Updates source status with autorizacao/captura statuses
Displays applicable actions according to current payment status