Add new subscription videos

[maxali]

Add newsubscriptionvideos in app.user functions.

Adding this will load subscription videos.

    // New subscription videos
    newsubscriptionvideos: function( vars, cb ) {
        app.talk( 'feeds/api/users/'+ userid +'/newsubscriptionvideos', vars, cb )
    },

[fvdm]

Thank you, I'll look into this.