Change année copyright

app/api/absences.py

app/api/billets_absences.py

app/api/departements.py

app/api/etudiants.py

app/api/evaluations.py

app/api/formations.py

app/api/formsemestres.py

app/api/jury.py

app/api/logos.py

app/api/partitions.py

app/api/tools.py

app/api/users.py

app/but/apc_edit_ue.py

app/but/bulletin_but.py

app/but/bulletin_but_pdf.py

app/but/bulletin_but_xml_compat.py

app/but/cursus_but.py

app/but/forms/jury_but_forms.py

app/but/forms/refcomp_forms.py

app/but/import_refcomp.py