porting the hooks and starting with the templates

apps/calendar/appinfo/app.php

apps/calendar/index.php

apps/calendar/lib/app.php

apps/contacts/appinfo/app.php

apps/files_archive/appinfo/app.php

apps/files_encryption/appinfo/app.php

apps/files_sharing/appinfo/app.php

apps/files_sharing/lib_share.php

apps/files_versions/appinfo/app.php

apps/gallery/lib/hooks_handlers.php

apps/media/lib_media.php

lib/public/template.php

lib/public/util.php