Moved application code to the Application layer

Imported Win10 project
Code cleanup
WIP - Use common UWP services for Win8.1 and Win10

ModernKeePass10/ViewModels/SaveViewModel.cs

@@ -0,0 +1,31 @@
+using Autofac;
+using ModernKeePass.Domain.Dtos;
+using ModernKeePass.Domain.Interfaces;
+
+namespace ModernKeePass.ViewModels
+{
+    public class SaveViewModel
+    {
+        private readonly IDatabaseService _database;
+        public SaveViewModel() : this(App.Container.Resolve<IDatabaseService>()) { }
+
+        public SaveViewModel(IDatabaseService database)
+        {
+            _database = database;
+        }
+
+        public void Save(bool close = true)
+        {
+            _database.Save();
+            if (close) _database.Close();
+        }
+
+        public void Save(string token)
+        {
+            _database.SaveAs(new FileInfo
+            {
+                Path = token
+            });
+        }
+    }
+}