Bug 11299: (follow-up) adjust tests for bug 26641, fix styling, fix population of...

Bug 11299: (follow-up) adjust tests for bug 26641, fix styling, fix population of new record

This corrects parameters in tests to adjust for new parameter in LinkBibHeadings

We also add lines to remove classes before adding the correct class while linking and restore
a missing class to the icons

Lastly we correct fetching the paramters to pass to authority creation popup to ensure
values are populated on save

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>