The rationale behind this is that if the user wants to report violent media,
they might not want to see it repeatedly. The “sensitive” property is still
kept, displaying different messages for hidden media depending on whether
they are marked as sensitive.
* Fix#117 - Add ability to specify alternative text for media attachments
- POST /api/v1/media accepts `description` straight away
- PUT /api/v1/media/:id to update `description` (only for unattached ones)
- Serialized as `name` of Document object in ActivityPub
- Uploads form adjusted for better performance and description input
* Add tests
* Change undo button blend mode to difference
* Redesign video player
* Use new video player on static public pages too
* Use media gallery component on static public pages too
* Pause video when hiding it
* Full-screen sizing on WebKit
* Add aria labels to video player buttons
* Display link card on public status page
* Fix fullscreen from modal sizing issue
* Remove contain: strict property to fix fullscreen from columns