Bug 23686: Check onsite checkout when the last checkout was an onsite one

Bug 23686: Check onsite checkout when the last checkout was an onsite one

Prevent from checking again and again the onsite checkout box when
doing onsite checkouts in batches. If preceding checkout was an onsite
one, the box will be checked.

Test plan:

1. enable  OnSiteCheckouts
2. make your circulation rules able to checkout onsite
3. onsite checkout a document
4. you should return to the checkout page, the box isn't checked
5. apply patch
6. updatedatabase.pl
7. redo steps 3, it should again print a checkout page with an
   unchecked onsite checkout box
8. enable  OnSiteCheckoutAutoCheck system preference
9. redo step 3
10. when returning to the checkout page, the onsite checkout box
    should be already checked

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>