Change placeholder translation to T + source

src/main.cpp

             xmlout.writeCharacters(c->messages.at(i));
             xmlout.writeEndElement();
             xmlout.writeStartElement("translation");
-            xmlout.writeCharacters("Translated");
+            xmlout.writeCharacters("T" + c->messages.at(i));
             xmlout.writeEndElement();
             xmlout.writeEndElement();
         }