update LatestInLibraryView to use getLatestMedia

[elliots]

This now matches what the web player does.

Before this change, it displayed the latest shows added.

[elliots]

The getLatestMedia endpoint doesn't appear to support paging, so I'm grabbing 3x the number so the trailing "Show All" button has a bit more in it. Not very nice. Is there a better way?

[LePips]

This breaks the "random" selection when navigating to the library page from one of these views. I admit I didn't take a good look at how the parameter creation was refactored when that work was done but it should be redone. Or for now, you can override the _getDefaultParams/getRandomItemFromLibrary for the new view model.

doesn't appear to support paging, so I'm grabbing 3x the number

That's fine for now. I will be redoing that number of items thing.

[elliots]

I've fixed the linting issues, and implemented getRandomItemFromLibrary. The implementation grabs a random item from the items and wraps it in BaseItemDtoQueryResult. Also not brilliant but i think better than getting a random one from the whole library.

I couldn't see where the toolbar with the RandomItemButton is displayed, so I haven't actually tested it yet.