Async dashboard (#3916)

* Dashboard: Load Lightning balance async, display default currency

* Simplify approach, improve views and scripts

* Async tiles


Async tiles

* Add period for app sales

* Fix missing keypad view sales

* Fix after rebase

* Fix awaited call

* Fix build

Co-authored-by: Nicolas Dorier <nicolas.dorier@gmail.com>

BTCPayServer/Components/StoreNumbers/StoreNumbersViewModel.cs

@@ -1,4 +1,3 @@
-using System.Collections;
 using BTCPayServer.Data;
 
 namespace BTCPayServer.Components.StoreNumbers;
@@ -10,5 +9,7 @@ public class StoreNumbersViewModel
     public int PayoutsPending { get; set; }
     public int? Transactions { get; set; }
     public int RefundsIssued { get; set; }
-    public int TransactionDays { get; set; }
+    public int TransactionDays { get; set; } = 7;
+    public bool InitialRendering { get; set; }
+    public string CryptoCode { get; set; }
 }