The old VideoForm and LivestreamForm were only reachable through a hidden `legacyEdit=true` query param on `/content/videos/:id` and `/content/livestreams/:id`. This removes that mode and deletes everything that was only reachable through it.

dashboard

Remove legacy VideoForm and LivestreamForm and the legacyEdit mode

Make Dashboard's UI locale list dynamic, similar to partnerplatform to allow automatic translations and listing

make dashboard own UI locale list dynamic

The Dashboard and Partnerplatform now works more in-sync with each other, bringing more realtime updates to changes in the CMS.

Changelog.

Add more WYSIWYG feeling to the cms