Bug 14787: Remember confirmations for a patron session

Bug 14787: Remember confirmations for a patron session

This patch adds functionality that will remember whether an action has been confirmed for a particular patron for the session. While carrying out an action on that patron, if the same checkout confirmation message keeps appearing the user can now select to remember their confirmation while they are still working on that patron. When the user moves onto a new patron the confirmations then reset and accumulate again for the new patron.

Test plan:
We're going to use rental fees as the example to prompt the checkout confirmation dialog. If you wish to use something else to test then feel free, it should work the same. Do not use patron debts though, as we already track a confirmation for this elsewhere and the test plan will appear to fail when in fact it is behaving as expected

1) In system preferences set RentalFeesCheckoutConfirmation to 'ask'
2) Choose a patron and checkout an item to that patron that incurrs a rental charge (in KTD this will be any item that does not have an itype of 'BK', 'REF' or 'VM'
3) A dialog should display asking you to confirm the checkout.
4) There should be a checkbox on the dialog to "Remember for the session for this patron"
5) Click Yes, checkout out without checking this checkbox
6) Select another item and checkout - the dialog should display again
7) This time, check the checkbox and click Yes, check out
8) Checkout another item (depending on your fines limit settings, you may need to pay the rental charges before the system will allow you to checkout again so go ahead and do this)
9) This time the dialog should not appear as the system has remembered our confirmation for this patron for the session
10) Choose a new patron
11) Repeat steps 2 - 9
12) It should work as outlined above
13) Sign off!

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>