CVideoDbUrl: fix option name "artistid" instead of "actorid" for musicvideos
videodb: don't duplicate JOIN statements in musicvideo album SQL queries
VideoDatabaseDirectory: make sure to translate all IDs in the path of a grouped node into URL parameters (fixes #14333)
fix predefined sorting of musicvideo nodes (when accessed through the music library)
Merge pull request #4105 from Montellese/fix_musicvideos_artists_albums

Only show albums of the selected musicvideo artist