update staging.yaml
Merge remote-tracking branch 'origin/hq-dropdown' into autostaging
Merge remote-tracking branch 'origin/refactor-domain-copy2' into autostaging
Merge remote-tracking branch 'origin/vellum-requirejs+use-django-compressor' into autostaging
Merge remote-tracking branch 'origin/use-django-compressor' into autostaging
Merge remote-tracking branch 'origin/dynamic-links' into autostaging
Merge remote-tracking branch 'origin/offline-install-multimedia' into autostaging
Merge remote-tracking branch 'origin/logos' into autostaging
Merge remote-tracking branch 'origin/109909-case-performance' into autostaging
Merge branch 'switch_to_site_code' into autostaging
update submodule refs