fix default authority search in bib editor

When clicking on the '...' of an headings field
in the bib editor, the authority search that
popped up did not take the default search
string from the bib field.  Fixed by making
sure that openAuth is always used to do the
popup link.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>

cataloguing/addbiblio.pl

@@ -382,7 +382,7 @@ sub create_input {
                     maxlength=\"$max_length\"
                     \/>
                     <a href=\"#\" class=\"buttonDot\"
-                        onclick=\"Dopop('/cgi-bin/koha/authorities/auth_finder.pl?authtypecode=".$tagslib->{$tag}->{$subfield}->{authtypecode}."&amp;index=$subfield_data{id}','$subfield_data{id}'); return false;\" tabindex=\"1\" title=\"Tag Editor\">...</a>
+                        onclick=\"openAuth(this.parentNode.getElementsByTagName('input')[1].id,'".$tagslib->{$tag}->{$subfield}->{authtypecode}."'); return false;\" tabindex=\"1\" title=\"Tag Editor\">...</a>
             ";
       } else {
         $subfield_data{marc_value} =