Merge branch '547_improve_new_version_handling' into 'master'

beat/web/algorithms/templates/algorithms/edition.html

beat/web/algorithms/tests/tests_api.py

beat/web/code/models.py

beat/web/common/models.py

beat/web/common/serializers.py

beat/web/dataformats/tests/tests_api.py

beat/web/libraries/templates/libraries/edition.html

beat/web/libraries/tests/tests_api.py

beat/web/plotters/tests.py

beat/web/settings/test.py

beat/web/toolchains/templates/toolchains/edition.html

beat/web/toolchains/tests.py

dev.yml

release.cfg