When closing the various "edit" media modals, the related views should be removed from the DOM

[gcorne]

The various edit modals (Edit Gallery, Edit Image Details, Edit Playlist, and Edit Video Playlist) when closed either by clicking update or through other means do not remove the instance of the modal and the uploader from the DOM. During a long editing session where the edit modals are opened multiple times, this results in DOM nodes for both the media modal and the uploader being created each time an edit modal is opened, which is not ideal.

Also, see comment:43:ticket:21811.

[azaozz]

In 27276:

When closing the various "edit" media modals, remove the related views elements from the DOM. Props gcorne, fixes #27204.