refs #199, cleaned up contexts a bit after rebasing to current master

* friend CRuntime on top
* fixed some public constructors (made protected)
* Also made registerWithDBus protected
* Fixed some copy/paste issues in getIContextXXX
* Reordered private/public sections

src/blackcore/context_simulator.h

@@ -24,7 +24,6 @@ namespace BlackCore
         Q_CLASSINFO("D-Bus Interface", BLACKCORE_CONTEXTSIMULATOR_INTERFACENAME)
 
     public:
-
         //! \brief Service name
         static const QString &InterfaceName()
         {
@@ -55,8 +54,6 @@ namespace BlackCore
         virtual BlackMisc::Aviation::CAircraft getOwnAircraft() const = 0;
 
     protected:
-        friend class CRuntime;
-
         //! \brief Constructor
         IContextSimulator(CRuntimeConfig::ContextMode mode, CRuntime *runtime) : CContext(mode, runtime) {}
     };