Bug 33581: Add sample patrons to patch and some hints

Bug 33581: Add sample patrons to patch and some hints

* Adds sample patrons to the new dependency checking JS
* Adds a hind "requires sample libraries" to sample patrons
  and sample holidays.

To test:
* Build CSS (yarn build)
* Veriy the checkbox for sample patrons works like the
  sample holidays one
* Verify the hint shows up as intended

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>