Bug 18685: (bug 18551 follow-up) Fix patron toolbar

Bug 18685: (bug 18551 follow-up) Fix patron toolbar

Bug 18551 moves the way the filters are displayed and so the position of
the patron toolbar must be recalculated.

Test plan:
Edit patron's detail
open the filters, scrolldown
close the filters, scrolldown
=> The toolbar must be correctly placed

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
(cherry picked from commit 6ae6d4bcb5238b1ffc0a22cc1d83ac05ba982b92)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit a0043ec80d11d718b8ea13e69879e7d4309d011e)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>