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/storage/bineeprom.cpp

@@ -60,6 +60,7 @@ bool BinEepromFormat::write(const RadioData & radioData)
     result = writeToFile(eeprom, eeprom_size);
   }
   else {
+    // TODO here we could call setError(eepromInterface->errors())
     setError(QObject::tr("Cannot save EEPROM"));
     result = false;
   }