feature: shortcut

Billing.Shared/App.cs

@@ -13,6 +13,7 @@ namespace Billing
 {
     public class App : Application
     {
+        internal const string NewBillAction = "/newbill";
         private const string SaveLocationKey = nameof(SaveLocationKey);
 
         public static AppTheme CurrentTheme { get; private set; }
@@ -21,17 +22,27 @@ namespace Billing
         public static List<Account> Accounts => accounts ??= new List<Account>();
         public static List<Category> Categories => categories ??= new List<Category>();
         public static bool SaveLocation => saveLocation;
+        public static string MainRoute => mainRoute;
 
         private static List<Bill> bills;
         private static List<Account> accounts;
         private static List<Category> categories;
         private static bool saveLocation;
+        private static string mainRoute;
 
         private string initialUrl;
 
         public App(string url = null)
         {
-            initialUrl = url;
+            if (url == NewBillAction)
+            {
+                mainRoute = "//Bills/Details";
+            }
+            else
+            {
+                mainRoute = "//Bills";
+                initialUrl = url;
+            }
             CurrentCulture = new PlatformCulture();
             InitResources();