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

3rdparty/qtsingleapplication/qtlockedfile.cpp

@@ -37,6 +37,9 @@
 **
 ****************************************************************************/
 
+#include <QFile>
+#include <QString>
+
 #include "qtlockedfile.h"
 
 /*!