WIP: modernisation code jurys

app/but/cursus_but.py

app/models/etudiants.py

app/models/ues.py

app/scodoc/sco_apogee_csv.py

app/scodoc/sco_assiduites.py

app/scodoc/sco_cursus.py

app/scodoc/sco_cursus_dut.py

app/scodoc/sco_formsemestre_validation.py

app/scodoc/sco_groups.py

app/scodoc/sco_groups_exports.py

app/scodoc/sco_groups_view.py

app/scodoc/sco_page_etud.py

app/scodoc/sco_prepajury.py

app/scodoc/sco_pv_dict.py

sco_version.py