Resolve "SImple brint base template missing <base>"

Closes #884

See merge request !1290

Update dependency django-titofisto to v1

See merge request !1289

Update dependency graphene-django to >=3.0.0, <=3.1.2

See merge request !1288

Resolve "Data management for the Models `Room` and `SchoolTerm`"

Closes #831 and #715

See merge request !1208

# Conflicts:
#   CHANGELOG.rst

Update dependency django-cleanup to v8

See merge request !1265

This reverts commit 6a893fc4.