Moved splashscreen to MediaBrowser.Common and adjusted properties.

MediaBrowser.Common/UI/Splash.xaml

@@ -0,0 +1,9 @@
+<Window x:Class="MediaBrowser.Common.UI.Splash"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="SplashScreen" Height="300" Width="600" ShowInTaskbar="False" ResizeMode="NoResize" WindowStartupLocation="CenterScreen"
+        WindowState="Normal" WindowStyle="None" Background="White" AllowsTransparency="True">
+    <Grid>
+        
+    </Grid>
+</Window>

MediaBrowser.Common/UI/Splash.xaml.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+using MediaBrowser.Model.Progress;
+
+namespace MediaBrowser.Common.UI
+{
+    /// <summary>
+    /// Interaction logic for Splash.xaml
+    /// </summary>
+    public partial class Splash : Window
+    {
+        public Splash(IProgress<TaskProgress> progress)
+        {
+            InitializeComponent();
+        }
+    }
+}