Changed the discord handling to try to better ensure that if the option to try to show the artwork for the currently playing item internally is going to have a valid unique id to avoid uploading issues
Changed the internal handling of the local library db unique id to reduce some of the overhead related to its use in the results pane when used to maintain the prior selected items within the active view
Fixed the add bookmark handling to do more to ensure a title will be generated for it if the action hasn't provided one (e.g. when using the send-to action from the main playlist instead of the dedicated bookmark selected action)