Selected Playlist switches when reloading page

[MSindermann]

Currently, when I look at a playlist in my course and reload the page, the plugin will revert back to selecting and displaying the standard playlist instead of whichever one I had selected / worked on.

Expected behavior: When I reload the page, nothing about what I was working on and where changes.

Proposed solution: The plugin needs to save the last selected playlist, to display it even after a reload. However, it might not be wanted behavior to have that happen if someone comes back to working on their course after some amount of time.

"Workaround": I think what would help alleviate confusion would be to write the name of the playlist somewhere more visible than just the side menu, e.g. in a title/header above the video list.
Even if reloading still switches to the standard playlist, the user gets better feedback about what has happened and can more easily re-orient themselves.