This reverts commit f93a9f78d9
In #4255, `runserver_plus` was replaced by `runserver` due to some bugs in django-extensions, preventing us to upgrade Django.
In #4372, django-extensions was upgraded to a version with a fix, so we can go back to using `runserver_plus`.
* Replace runserver_plus with runserver since it is not compatible with django >= 4.1
* Replace runserver_plus with runserver in post_gen_hooks
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Co-authored-by: Bruno Alla <alla.brunoo@gmail.com>
Using system Python 3 distribution (3.7.3) in order to allow the use of Debian packages for numpy, scipy, etc. without the need of building them or installing build dependencies.
Changed `#!/bin/sh` in shell scripts to `#!/bin/bash` to make `set -o pipefail` work.
