Shuffle Albums in context menus

[giorov]

There should be a context menu option to shuffle albums when right-clicking (alt-clicking) an artist or playlist. This option should also exist alongside "Shuffle tracks" when alt-clicking highlighted albums or artists or genres or when alt-clicking in the Artist pane.

The effect would be that albums would play shuffled but with their tracks in the original order.

[phred]

Context menu for playlist already exists.
Right-click on a playlist in the navigator panel and select Play Shuffled.