[ticket/12364] Add template identifier var to all missing pages

PHPBB3-12364
Merge remote-tracking branch 'paybas/ticket/12364' into develop-ascraeus

* paybas/ticket/12364:
  [ticket/12364] Add template identifier var to all missing pages
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12364] Add template identifier var to all missing pages