wip Remove import_limit and export_limit from policy
If needed, they can be simulated by importing from special resources.
wip Merge quotaholder into astakos
quotaholder_django/quotaholder_app becomes astakos/quotaholderquotaholder_django/test becomes astakos/quotaholder/test
Delete obsolete testing files
Delete obsolete code
wip Remove dependency from commissioning
Define exceptions locally
wip Remove Entity model
wip Rename entity into holder
Return a holding as a tuple rather than list
wip Remove CallSerial model and related calls
Update quotaholder unit tests