Fix BlackCore header includes

* Include only what is used
* Use forward declaration when possible
* Sorted includes

refs #598

src/blackcore/contextaudio.h

@@ -12,17 +12,39 @@
 #ifndef BLACKCORE_CONTEXTAUDIO_H
 #define BLACKCORE_CONTEXTAUDIO_H
 
-#include "blackcoreexport.h"
+#include "blackcore/blackcoreexport.h"
 #include "blackcore/context.h"
-#include "blackmisc/audio/notificationsounds.h"
-#include "blackmisc/identifier.h"
-#include "blackmisc/genericdbusinterface.h"
+#include "blackcore/corefacade.h"
+#include "blackcore/corefacadeconfig.h"
 #include "blackmisc/audio/audiodeviceinfolist.h"
+#include "blackmisc/audio/notificationsounds.h"
+#include "blackmisc/audio/voiceroom.h"
 #include "blackmisc/audio/voiceroomlist.h"
-#include "blackmisc/network/userlist.h"
 #include "blackmisc/aviation/callsignset.h"
+#include "blackmisc/aviation/comsystem.h"
 #include "blackmisc/aviation/selcal.h"
+#include "blackmisc/identifier.h"
+#include "blackmisc/network/userlist.h"
+
 #include <QObject>
+#include <QString>
+
+class QDBusConnection;
+
+namespace BlackMisc
+{
+    class CDBusServer;
+
+    namespace Audio
+    {
+        class CAudioDeviceInfo;
+    }
+
+    namespace Aviation
+    {
+        class CCallsign;
+    }
+}
 
 //! \addtogroup dbus
 //! @{