RealItem: rm BA_Version

GUI/Model/Data/RealItem.cpp

@@ -44,7 +44,7 @@ const QString NativeDataUnits("NativeDataUnits");
 
 namespace Attrib {
 
-const QString BA_Version("version");
+const QString version("version");
 const QString value("value");
 
 } // namespace Attrib
@@ -351,7 +351,7 @@ void RealItem::writeTo(QXmlStreamWriter* writer) const
     QByteArray a = serializeBinaryData();
     if (!a.isEmpty()) {
         writer->writeStartElement(Tag::BinaryData);
-        writer->writeAttribute(Attrib::BA_Version, "1");
+        writer->writeAttribute(Attrib::version, "1");
         writer->writeCharacters(a.toBase64());
         writer->writeEndElement();
     }
@@ -400,7 +400,7 @@ void RealItem::readFrom(QXmlStreamReader* reader)
 
         // binary data
         if (reader->name() == Tag::BinaryData) {
-            if (reader->attributes().value(Attrib::BA_Version).toInt() == 1) {
+            if (reader->attributes().value(Attrib::version).toInt() == 1) {
                 QString valueAsBase64 =
                     reader->readElementText(QXmlStreamReader::SkipChildElements);
                 const auto data = QByteArray::fromBase64(