Divers correctifs et modernisation du code (commence #381)

app/api/formsemestres.py

app/api/partitions.py

app/models/etudiants.py

app/scodoc/sco_apogee_csv.py

app/scodoc/sco_bulletins.py

app/scodoc/sco_etape_apogee_view.py

app/scodoc/sco_etud.py

app/scodoc/sco_find_etud.py

app/scodoc/sco_formsemestre_edit.py

app/scodoc/sco_formsemestre_exterieurs.py

app/scodoc/sco_formsemestre_inscriptions.py

app/scodoc/sco_formsemestre_validation.py

app/scodoc/sco_import_etuds.py

app/scodoc/sco_inscr_passage.py

app/scodoc/sco_moduleimpl_inscriptions.py

app/scodoc/sco_page_etud.py

app/scodoc/sco_synchro_etuds.py

app/scodoc/sco_trombino.py

app/views/notes.py

app/views/scolar.py