Code reformat and UI tweaks

QuickLook.Plugin/QuickLook.Plugin.EpubViewer/EpubReader/Schema/Navigation/EpubNavigationTarget.cs

@@ -1,4 +1,21 @@
-using System.Collections.Generic;
+// Copyright © 2018 Marco Gavelli and Paddy Xu
+// 
+// This file is part of QuickLook program.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System.Collections.Generic;
 
 namespace VersOne.Epub.Schema
 {
@@ -11,4 +28,4 @@ namespace VersOne.Epub.Schema
         public List<EpubNavigationLabel> NavigationLabels { get; set; }
         public EpubNavigationContent Content { get; set; }
     }
-}
+}