Bug 12811 - Patron 'Details' and 'Check out' pages not working for staff users withou...

Bug 12811 - Patron 'Details' and 'Check out' pages not working for staff users without renewal override permissions

In case when the staff user doesn't have (circulate) ->
(override_renewals) permission granted, this code part

   var AllowRenewalLimitOverride = [%
CAN_user_circulate_override_renewals && AllowRenewalLimitOverride %];

in circ/circulation.tt and members/moremember.tt leads to javascript
error, because TT statement evaluates to empty string.

To reproduce:

- set AllowRenewalLimitOverride syspref to "Don't allow" (this step is
  possibly redundant / not quite relevant),
- for testing purposes, log in as some (sample) staff user whitch does
  not have permission granted for "(override_renewals) Override blocked
  renewals",
- have a look at some patron accounts (preferably, ones with 1+
  check-out), observe that page layout is incorrect in "Check Out" and
  "Details" tab.

To test:

- apply patch,
- retest and ensure that this issue is no longer reproductible,
- make sure that there are no regressions of any kinds regarding renewal
  override permission for staff users (i.e, that it still works like
  intended).

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, passes QA script and tests.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>