* add provider, related on acquirer_id.provider, in order to display
certain piece of information on tx depending on their provider;
* better tx form view and partner address display;
* remove unnecessary notebook on tx form view as it is not used;
* rename Payment Acquirers menu into Payment Methods, easier to
understand;
* acquirer kanban view improved to install / activate / configure them
depending on their state;
* be able to publish / unpublish acquirers without having to wait for
website_payment to add a button;