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/collection/savedgroupingmanager.h

@@ -24,12 +24,15 @@
 #include "config.h"
 
 #include <QDialog>
+#include <QObject>
+#include <QWidget>
 #include <QStandardItemModel>
+#include <QString>
 
 #include "collectionmodel.h"
 
-class Ui_SavedGroupingManager;
 class CollectionFilterWidget;
+class Ui_SavedGroupingManager;
 
 class SavedGroupingManager : public QDialog {
   Q_OBJECT