Properly select asset card when reloading page.
Properly select asset card when reloading page.

The asset card highlighting behavior was broken at some point;
if you reloaded the page while playing an asset from the home page,
it would play that asset correctly but wouldn't highlight the card.
This change ensures the card is selected.

Change-Id: I5b46cc7fdb48326f848f308b591d20e5b7cb7093

shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player