Ref T215, some adjustments of user object

* remove "valid" from some functions, because no validity is checked
* homebase + real name string

src/blackgui/components/flightplancomponent.cpp

@@ -193,7 +193,7 @@ namespace BlackGui
             if (m_flightPlan.wasSentOrLoaded()) { return; }
 
             // only override with valid values
-            if (user.hasValidRealName())
+            if (user.hasRealName())
             {
                 ui->le_PilotsName->setText(user.getRealName());
             }
@@ -201,7 +201,7 @@ namespace BlackGui
             {
                 ui->le_PilotsHomeBase->setText(user.getHomeBase().getIcaoCode());
             }
-            if (user.hasValidCallsign())
+            if (user.hasCallsign())
             {
                 ui->le_Callsign->setText(user.getCallsign().asString());
             }

src/blackgui/components/logincomponent.cpp

@@ -351,7 +351,7 @@ namespace BlackGui
         {
             const CServer lastServer = m_lastVatsimServer.get();
             const CUser lastUser = lastServer.getUser();
-            if (lastUser.hasValidCallsign())
+            if (lastUser.hasCallsign())
             {
                 ui->le_Callsign->setText(lastUser.getCallsign().asString());
                 ui->le_VatsimId->setText(lastUser.getId());

src/blackgui/components/remoteaircraftselector.cpp

@@ -110,7 +110,7 @@ namespace BlackGui
                          aircraft.getAircraftIcaoCode().toQString(false) %
                          QLatin1String(")");
                 }
-                if (aircraft.hasValidRealName())
+                if (aircraft.hasRealName())
                 {
                     i += QLatin1String(" - ") % aircraft.getPilotRealName();
                 }