Includes, comments and bugfixes

- Fix includes
- Use common regex (Song::kCoverRemoveDisc) for removing Disc/CD from album
- Remove Disc/CD from album when creating hash
- Make imobiledevice support compile
- Fix setting device on windows

src/playlist/playlistlistview.h

@@ -18,8 +18,16 @@
  * 
  */
 
+#ifndef PLAYLISTVIEW_H
+#define PLAYLISTVIEW_H
+
 #include "config.h"
 
+#include <QObject>
+#include <QWidget>
+#include <QString>
+#include <QPaintEvent>
+
 #include "widgets/autoexpandingtreeview.h"
 
 class PlaylistListView : public AutoExpandingTreeView {
@@ -31,5 +39,7 @@ class PlaylistListView : public AutoExpandingTreeView {
 
  protected:
   // QWidget
-  void paintEvent(QPaintEvent* event);
+  void paintEvent(QPaintEvent *event);
 };
+
+#endif  // PLAYLISTVIEW_H