Bug 35493: Do not show housebound roles as collapsible unless the housebound module...

Bug 35493: Do not show housebound roles as collapsible unless the housebound module is on

To test:
1. HouseboundModule - disabled
2. CollapseFieldsPatronAddForm, add 'Housebound roles'
3. Edit/create a patron.
4. Notice the useless Housebound roles link at the top of the page
5. APPLY PATCH
6. Try 1 - 3 again, this time no Housebound roles at the top ( Show collapsed fields )
7. Turn on HouseboundModule and make sure it now shows

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>