Bsongis/issue 4400 (#4425)

* Cosmetics before fixing #4400

* Cosmetics before fixing #4400

* Now one more conversion issue (SF => SH sources conversion from X9D to X7)

I don't know what is exactly the conversion issue as I don't have the original EEPROM, but I used this one for my tests, so I fix it

* Now we display correctly the corrupted mixers list so that copy/paste will work correctly (it was not consistent)

+ some cosmetics

* Test removed too quickly

* One global removed ;)

companion/src/mdichild.cpp

@@ -605,7 +605,7 @@ bool MdiChild::saveAs(bool isNew)
   if (isNew)
     return saveFile(fileName);
   else
-    return saveFile(fileName,true);
+    return saveFile(fileName, true);
 }
 
 bool MdiChild::saveFile(const QString & filename, bool setCurrent)
@@ -614,7 +614,6 @@ bool MdiChild::saveFile(const QString & filename, bool setCurrent)
   Storage storage(filename);
   bool result = storage.write(radioData);
   if (!result) {
-    QMessageBox::warning(this, "Companion", tr("Cannot save file"), QMessageBox::Ok);
     return false;
   }