With 98ed53ce when a form view is saved when a html field is in code
view mode, the change is not lost.
This new backend tour check that when saving in or not in code view, the
content is saved effectively.
The test not in code view would ensure issues like #14381#14351#14394
are detected on runbot.
closes#14475
opw-693052
note: the old test system is used so this test is only for up to saas-11
This test is ran in the backend and, if we do not mark it as post
install, the dependencies of the web module are not installed.
The webclient will then errors like "View type 'kanban' is not present
in the view registry".
The `unittest2` package is simply a backport of `unittest` from the
Standard Library of Python 2.7 to previous versions.
There is no reason to use it any longer.
Closes#6941
Nicolas Lempereur