Bug 18936: (follow-up) Adjust circ rule related tests so that they pass

Bug 18936: (follow-up) Adjust circ rule related tests so that they pass

Bunch of tests broke after moving from issuingrules to
circulation_rules. This accomodates the tests for this refactoring and
DB change.

The itemtype did not exist in the DB. We create it at the beginning of
the tests. Ideally we would like to create it filling the form.

Signed-off-by: Minna Kivinen <minna.kivinen@hamk.fi>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>