As of workshop RW/KB

* Allow to "jump" to text message channel from ATC / aircraft
* changed timer connections for components to new SLOT syntax
* housekeeping:
** new function in network context for station by callsign
** refactored textmessage component, allow to select tab by slot
** wired up signal / slots in main GUI
** removed unused functions
** allow to select area and "myself" in infoarea

src/blackcore/context_network.h

@@ -148,6 +148,9 @@ namespace BlackCore
         //! Aircraft for given callsign
         virtual BlackMisc::Simulation::CSimulatedAircraft getAircraftForCallsign(const BlackMisc::Aviation::CCallsign &callsign) const = 0;
 
+        //! Online station for callsign
+        virtual BlackMisc::Aviation::CAtcStation getOnlineStationForCallsign(const BlackMisc::Aviation::CCallsign &callsign) const = 0;
+
         //! Get all users
         virtual BlackMisc::Network::CUserList getUsers() const = 0;