hide loader after marking feed as read

template/static/javascripts/app.js

@@ -359,6 +359,7 @@ var vm = new Vue({
       var query = this.getItemsQuery()
       api.items.mark_read(query).then(function() {
         vm.items = []
+        vm.itemsPage = {'cur': 1, 'num': 1}
         vm.refreshStats()
       })
     },