implement showing only videos that are either unassigned or assigned to a current user

update code for new USL Editor app

add Ukrainian localization

Cleanup

Login check on save

Login requirements

Changes to save format

DB storage debug 6

DB storage debug 5

DB storage debug 4

DB storage debug 3

DB storage debug 2

DB storage debug 1

DB storage for captions

Upload folder using huggingface_hub

Path update

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