Branch updated according to IRC review from Kalikiana:
* copyright header added to new file (midori-transfer.vala)
* instead of null-check use return_if_fail
* keep backwards compatibility by also emitting the old add-download signal for plugins until they migrate to using add-transfer
Branch updated according to IRC review from Kalikiana: transfer. vala)
* copyright header added to new file (midori-
* instead of null-check use return_if_fail
* keep backwards compatibility by also emitting the old add-download signal for plugins until they migrate to using add-transfer