[companion] Default category on new file was added at the wrong place and also created when reading form radio

companion/src/mainwindow.cpp

@@ -543,6 +543,10 @@ void MainWindow::newFile()
 {
   MdiChild * child = createMdiChild();
   child->newFile();
+    
+  if (IS_HORUS(getCurrentBoard())) {
+    child->categoryAdd();
+  }    
   child->show();
 }
 

companion/src/mdichild.cpp

@@ -597,10 +597,6 @@ void MdiChild::newFile()
   isUntitled = true;
   curFile = QString("document%1.otx").arg(sequenceNumber++);
   updateTitle();
-  
-  if (IS_HORUS(getCurrentBoard())) {
-    categoryAdd();
-  }    
 }
 
 bool MdiChild::loadFile(const QString & filename, bool resetCurrentFile)