Bug 27306: (QA follow-up) Add space between title and subtitle

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 9c8d4abeed)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

koha-tmpl/intranet-tmpl/prog/js/checkouts.js

@@ -943,7 +943,7 @@ $(document).ready(function() {
                         "mDataProp": function ( oObj ) {
                               let title = '<a class="return-claim-title strong" href="/cgi-bin/koha/catalogue/detail.pl?biblionumber=' + oObj.biblionumber + '">'
                                   + oObj.title
-                                  + ( oObj.subtitle ? oObj.subtitle : "" )
+                                  + ( oObj.subtitle ? " " + oObj.subtitle : "" )
                                   + ( oObj.enumchron || "" )
                               + '</a>';
                               if ( oObj.author ) {