Empty playlists should display playlist description and tags

[elynema]

Description

Currently, empty playlists simply display a message that reads "This playlist is empty." They should, however, display the playlist description and tags that can be entered when creating the playlist.

Current:

Prior behavior for an empty playlist:

[joncameron]

Tag, comment and description are loaded on the Avalon side. We could change Ramp behavior to display something similar to what we have with inaccessible items: empty div with the message, instead of the alert error. Right now Ramp reads this and crashes, and bubbles up the error (and doesn't show the other parts of the page). We can change this, again to match inaccessible items.

Changes will be on the Ramp side; we can change things there and then see if anything needs to be changed in Avalon for the playlist page.
@joncameron Create an issue in the Ramp repo for this change. (2 points)

[joncameron]

See samvera-labs/ramp#457