Translatable titles for the built in smart playlists

[Adam Olsen]

This patch makes the titles of the built in smart playlists translatable.

This ticket was migrated from the old trac: re #729

[Adam Olsen (arolsen)]

This will be complete until I can get the patch from the old trac.

[Mathias Brodala (mathbr)]

Here’s the patch; it still applies cleanly.

[Johannes Sasongko (sjohannes)]

I've committed a change that simplifies how builtin smart playlists are displayed and fixes this problem.