Changes the field for the CRSId primary key on the Account model to use
a new field that enforces lower-caseness for the CRSId in the database,
and when comparing CRSIds.

commitlint currently runs twice, once as part of a direct job and once
as part of pre-commit. As the direct job fails if the branch is not
rebased to main, we have decided to remove this in favour of running
only in pre-commit, which appears to behave more consistently.

Ensure crsid field is always lower cased

See merge request !39

chore(release): 0.4.0

See merge request !40