Amsterdam-schema-tools

* Bugfix: Fix error when invalid table is entered in derivedFrom paramter
* Bugfix: Fixed error in detecting if write user exists

* Feature: Added create-views command to django management commands to facilitate creating views.

* Bugfix: Ignore empty input lines in NDJSONImporter.

* Feature: Use dataset-specific schema to store temporary full load tables.
* Bugfix: Update main table relations after full load of relation table.

* Bugfix: Fix case of updating parent table where two relations exist where the name of one
relation is a prefix of the other relation.

* Feature: Added the option `--additional-grants` to the
`schema permissions apply` script to be able to set grants
for non-amsterdam-schema tables. This is needed for the `datasets_*` tables,
because on Azure these tables are accessed in PostgreSQL from a user
(or the anonymous) account and the `scope_openbaar` scopt has to be granted for
these tables.