Handle file open correctly

Path through code allowed for xmlfile to be used when file was not
opened. Also changed qWarning->qDebug to allow QT_FAIL_WARNINGS to be
used to find bugs.

src/ui/QGCPX4VehicleConfig.cc

@@ -204,12 +204,12 @@ void QGCPX4VehicleConfig::loadQgcConfig(bool primary)
     if (!autopilotdir.exists("general"))
     {
      //TODO: Throw some kind of error here. There is no general configuration directory
-        qWarning() << "Invalid general dir. no general configuration will be loaded.";
+        qDebug() << "Invalid general dir. no general configuration will be loaded.";
     }
     if (!autopilotdir.exists(mav->getAutopilotTypeName().toLower()))
     {
         //TODO: Throw an error here too, no autopilot specific configuration
-        qWarning() << "Invalid vehicle dir, no vehicle specific configuration will be loaded.";
+        qDebug() << "Invalid vehicle dir, no vehicle specific configuration will be loaded.";
     }
 
     // Generate widgets for the General tab.
@@ -380,23 +380,10 @@ void QGCPX4VehicleConfig::loadConfig()
     QGCToolWidget* tool;
 
     QDir autopilotdir(qApp->applicationDirPath() + "/files/" + mav->getAutopilotTypeName().toLower());
-    QDir generaldir = QDir(autopilotdir.absolutePath() + "/general/widgets");
-    QDir vehicledir = QDir(autopilotdir.absolutePath() + "/" + mav->getSystemTypeName().toLower() + "/widgets");
-    if (!autopilotdir.exists("general"))
-    {
-     //TODO: Throw some kind of error here. There is no general configuration directory
-        qWarning() << "Invalid general dir. no general configuration will be loaded.";
-    }
-    if (!autopilotdir.exists(mav->getAutopilotTypeName().toLower()))
-    {
-        //TODO: Throw an error here too, no autopilot specific configuration
-        qWarning() << "Invalid vehicle dir, no vehicle specific configuration will be loaded.";
-    }
     qDebug() << autopilotdir.absolutePath();
-    qDebug() << generaldir.absolutePath();
-    qDebug() << vehicledir.absolutePath();
+
     QFile xmlfile(autopilotdir.absolutePath() + "/arduplane.pdef.xml");
-    if (xmlfile.exists() && !xmlfile.open(QIODevice::ReadOnly))
+    if (!xmlfile.open(QIODevice::ReadOnly))
     {
         loadQgcConfig(false);
         doneLoadingConfig = true;