Reduce includes

src/context/contextalbumsview.h

@@ -27,23 +27,24 @@
 #include <memory>
 
 #include <QObject>
-#include <QWidget>
 #include <QAbstractItemModel>
 #include <QAbstractItemView>
-#include <QString>
-#include <QPixmap>
-#include <QPainter>
-#include <QSet>
-#include <QStyleOption>
 #include <QStyledItemDelegate>
-#include <QStyleOptionViewItem>
-#include <QAction>
-#include <QMenu>
-#include <QtEvents>
+#include <QStyleOption>
+#include <QSet>
+#include <QString>
 
 #include "core/song.h"
 #include "widgets/autoexpandingtreeview.h"
 
+class QWidget;
+class QMenu;
+class QAction;
+class QContextMenuEvent;
+class QHelpEvent;
+class QMouseEvent;
+class QPaintEvent;
+
 class Application;
 class EditTagDialog;
 class OrganiseDialog;