Test plan:
1) Go to any detail page in staff
2) Click on the modification log tab
3) Verify, that the object is prefilled with the records biblionumber
and you can also see it as parameter in the url
4) Click a second time on modification log to reset your search
Before this patch, the object parameter was empty.
It now contains the value of the biblionumber.
Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Work as described, no koha-qa errors