[ticket/12839] Include update related templates and assets in the package

PHPBB3-12839
Merge pull request #2723 from nickvergessen/ticket/12839

[ticket/12839] Include update related templates and assets in the package

* nickvergessen/ticket/12839:
  [ticket/12839] Include update related templates and assets in the package
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12839] Include update related templates and assets in the package