Fix critical bugs: touchEnabled undefined, MongoDB score sorting with score_value field

public/src/js/leaderboard.js

@@ -130,8 +130,9 @@ class Leaderboard {
 
         assets.sounds["se_cancel"].play()
 
-        // Return to song select
+        // Return to song select - get touchEnabled from global or default to false
         setTimeout(() => {
+            var touchEnabled = typeof window.touchEnabled !== 'undefined' ? window.touchEnabled : false
             new SongSelect(false, false, touchEnabled)
         }, 100)
     }