run eslint to fix most var instances

src/components/playback/nowplayinghelper.js

@@ -1,7 +1,7 @@
 export function getNowPlayingNames(nowPlayingItem, includeNonNameInfo) {
-    var topItem = nowPlayingItem;
-    var bottomItem = null;
-    var topText = nowPlayingItem.Name;
+    let topItem = nowPlayingItem;
+    let bottomItem = null;
+    let topText = nowPlayingItem.Name;
 
     if (nowPlayingItem.AlbumId && nowPlayingItem.MediaType === 'Audio') {
         topItem = {
@@ -21,7 +21,7 @@ export function getNowPlayingNames(nowPlayingItem, includeNonNameInfo) {
         }
     }
 
-    var bottomText = '';
+    let bottomText = '';
 
     if (nowPlayingItem.ArtistItems && nowPlayingItem.ArtistItems.length) {
         bottomItem = {
@@ -56,7 +56,7 @@ export function getNowPlayingNames(nowPlayingItem, includeNonNameInfo) {
         bottomText = nowPlayingItem.ProductionYear;
     }
 
-    var list = [];
+    const list = [];
 
     list.push({
         text: topText,