Moved application code to the Application layer

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

ModernKeePass10/Events/PasswordEventArgs.cs

@@ -0,0 +1,15 @@
+using System;
+using ModernKeePass.Domain.Entities;
+
+namespace ModernKeePass.Events
+{
+    public class PasswordEventArgs: EventArgs
+    {
+        public GroupEntity RootGroupEntity { get; set; }
+
+        public PasswordEventArgs(GroupEntity groupEntity)
+        {
+            RootGroupEntity = groupEntity;
+        }
+    }
+}