[Movies] Mutli-movie editing

[bugwelle]

Is your feature request related to a problem? Please describe. When I select more than one movie, I can't batch-edit them.

Describe the solution you'd like When I select more than one entry, a batch-edit mode should be enabled.

Describe alternatives you've considered Maybe a popup-window? Oder "right-click -> edit" window?

Additional context n/a