Evaluations: modernisation code

app/comp/res_compat.py

app/models/evaluations.py

app/models/events.py

app/models/formsemestre.py

app/models/moduleimpls.py

app/scodoc/sco_evaluation_check_abs.py

app/scodoc/sco_evaluations.py

app/scodoc/sco_liste_notes.py

app/static/css/gt_table.css

app/static/css/scodoc.css

app/tables/list_etuds.py

app/templates/assiduites/pages/calendrier.j2

app/views/assiduites.py

tests/unit/test_bulletin.py