Update to Play 2.3.5
Changes to sort ordering/facets:

 - don't display irrelevant holder/country/source facets when displaying
   child items of a repo or doc (fixes #394)
 - render sort order to a hidden field (fixes #393)
 - add sort order by id and default to it when in a repo or a doc
   (fixes #392)
Merge branch 'master' into merge_guides2