refs #262, fix update of aircraft position

Described here (3): https://dev.vatsim-germany.org/boards/22/topics/1792?r=1801#message-1801

* Also renamed: setOwnAircraftAvionics -> setOwnCockpit to be consistent
* Removed outdated methods

src/blackcore/context_runtime.h

@@ -176,6 +176,14 @@ namespace BlackCore
         //! \remarks only applicable for local object
         const CContextOwnAircraft *getCContextOwnAircraft() const;
 
+        //! Context for network
+        //! \remarks only applicable for local object
+        CContextNetwork *getCContextNetwork();
+
+        //! Context for network
+        //! \remarks only applicable for local object
+        const CContextNetwork *getCContextNetwork() const;
+
         //! Context for simulator
         //! \remarks only applicable for local object
         CContextSimulator *getCContextSimulator();