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While they are optional, beat/beat.editor> ensures that
you do not get useless empty fields that may look
like something is missing hence remove them from
here to ensure testing goes well.

These were generated wrongly by the previous
version of the migration helper scripts.

It has also shown that the large database was
wrongly written. This has been changed as well.

This will allow the docker tests to more easily setup and
cleanup its content.

While the folder is not used as these databases are generative
only, docker will create it anyway as mounting a non-exisiting
folder will trigger its creation with the daemon ownership
applied.

This makes use of the new environment field that can be
added to the database declaration and is then used to
select the runtime environment in place of the database
search done until now.