Bug 19786: (follow-up) Correct js include path, popup window size

Bug 19786: (follow-up) Correct js include path, popup window size

This follow-up adds the required KOHA_VERSION variable to two templates
where it was missing.

This patch also adds a 'window_size' parameter to a popup window
function so that self-closing windows like blinddetail-biblio-search.pl
can appear small and others at a reasonable size.

To test, apply the patch and clear your browser cache if
necessary.

- Confirm that the QA tools do not complain about missing KOHA_VERSION
  in auth_finder.tt and searchresultlist_auth.tt.

- Open a bibliographic record for editing in the basic editor using a
  framework in which a field is linked to authorities.
- Trigger the authority selection window for that field.
- Click the "Clear field" button at the top of the authority search
  pop-up window. Another smaller popup window should briefly appear, and
  then both windows should close.
- Trigger the authority selection window again.
- Click the "Create new authority" button. A new window should appear
  with the MARC authority editor. The window should be a usable size.

Signed-off-by: Claire Gravely <claire.gravely@bsz-bw.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>