In the future, the BDD tests will simply set up the required
test database themselves. Like with the template database, it
is not reimported when it already exists unless that is explicitly
forced.
Makes most of the API tests currently fail because they still
point to old test data.
Put the connection to the test database into auto-commit mode
and get rid of the explicit commits. Also use cursors always in
context managers and unify the two implementations that copy
data from the place table.
