Bug 27737: (follow-up) Minimal CSS changes to avoid regressions

Bug 27737: (follow-up) Minimal CSS changes to avoid regressions

To keep the specificity of the rules we want to have apply to both the
biblio editor and also the authorities editor, we need to add the ID for
the authorities editor, rather than remove the ID for the biblio editor.

Also, the removal of the selectors for #authoritiestabs descendents was
regressing the display of authority record details, which is where that
plural authoritiestabs element lives.

Test plan:

1.  With neither patch from this bug applied, Cataloging - New record -
    Default framework.
2.  Shrink and widen your browser window, noticing how the input fields
    flex to remain the full width, keeping the controls to duplicate and
    delete a subfield out directly to the right of the input.
3.  Authorities - search for Perl (or any term that will match a record),
    click the linked authority term to open the Authority detail display
4.  Note how the field number, field description, and subfield descriptions
    are all different colors, and subfield codes are on the same line as
    the subfield contents.
5.  Apply both patches from this bug.
6.  Cataloging - New record - Default framework
7.  Verify that the input fields still behave the same as you widen and
    shrink your browser window
8.  Authorities - New authority - Chronological Term
9.  Verify that the input fields now behave like the ones in the biblio
    editor, shrinking and widening to fill the width of the page, keeping
    the controls to duplicate and delete subfields immediately to the
    right of the field
10. Authorities - search for Perl, click the linked authority term to open
    the Authority detail display
11. Verify that the tag number, field description and subfield descriptions
    are still properly colored and subfield codes are still on the same
    line as the subfield contents.

Signed-off-by: David Nind <david@davidnind.com>
Trivial fixup for a copy-paste failure, missed the y on
subfield_loop_mandator

Signed-off-by: Petro Vashchuk <stalkernoid@gmail.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>