theme editor: disable window resize, fix year string for saved theme comment

Author: unitycoder

UnityLauncherPro/ThemeEditor.xaml

@@ -5,7 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:UnityLauncherPro"
         mc:Ignorable="d"
-        Title="ThemeEditor" Height="500" Width="500" WindowStyle="ToolWindow" Loaded="Window_Loaded" Background="#FF121212">
+        Title="ThemeEditor" Height="500" Width="500" WindowStyle="ToolWindow" Loaded="Window_Loaded" Background="#FF121212" ResizeMode="NoResize">
 
     <Window.CommandBindings>
         <CommandBinding Command="ApplicationCommands.Undo" Executed="Executed_Undo" CanExecute="CanExecute_Undo"/>

UnityLauncherPro/ThemeEditor.xaml.cs

@@ -129,7 +129,7 @@ private void BtnSaveTheme_Click(object sender, RoutedEventArgs e)
             if (saveFileDialog.ShowDialog() == true)
             {
                 List<string> iniRows = new List<string>();
-                iniRows.Add("# Created with UnityLauncherPro built-in theme editor " + DateTime.Now.ToString("dd/MM/YYYY"));
+                iniRows.Add("# Created with UnityLauncherPro built-in theme editor " + DateTime.Now.ToString("dd/MM/yyyy"));
                 for (int i = 0; i < themeColors.Count; i++)
                 {
                     iniRows.Add(themeColors[i].Key + "=" + themeColors[i].Brush.ToString());