In Python 3, all of these were "consolidated" under urllib(.request,
.parse, .errors) which is inconvenient.
Since we already have hard dependencies on requests and
werkzeug(.urls, which is a backport of Python 3's unicode-aware
urllib.parse) migrate *everything* to that.
A sticking point is urllib2.URLError, those were (mostly) replaced by
the slightly more general IOError which URLError extends.
The installation of a new acquirer was a bit complicated : from settings,
check the acquirer, then apply (install the module) then list view of
acquirer and finally edit it in form view.
This needed to be simplified. The payment acquirers are pre-filled
in payment. From the kanban view an `Install` button installs and
redirects to the form field.
Quoting Buckaroo Payment Engine 3.0 Implementation Manual:
Note: parameter names are not case sensitive (both in the request and in the
response). Parameter values are case sensitive.
Using data.get(BRQ_PAYMENT') is unreliable and may break in the future.
Update test to use different case.
opw 665439
Xavier Morel