Moved application code to the Application layer

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

ModernKeePass10/ViewModels/SettingsViewModel.cs

@@ -0,0 +1,20 @@
+using Autofac;
+using ModernKeePass.Domain.Interfaces;
+
+namespace ModernKeePass.ViewModels
+{
+    public class SettingsViewModel
+    {
+        private readonly IDatabaseService _database;
+
+        public bool IsDatabaseOpened => _database != null && _database.IsOpen;
+
+        public SettingsViewModel() : this(App.Container.Resolve<IDatabaseService>())
+        { }
+
+        public SettingsViewModel(IDatabaseService database)
+        {
+            _database = database;
+        }
+    }
+}