Complete JodaTime -> java.time migration (remaining objects, db handlers, net msg, jobs) + QC pass; untrack working reference files

src/engine/net/NetMsgFactory.java

@@ -15,7 +15,7 @@ import engine.net.client.ClientConnection;
 import engine.net.client.Protocol;
 import engine.objects.PlayerCharacter;
 import engine.server.MBServerStatics;
-import org.joda.time.DateTime;
+import java.time.Instant;
 import org.pmw.tinylog.Logger;
 
 import java.lang.reflect.Constructor;
@@ -86,7 +86,7 @@ public class NetMsgFactory {
 
             if (protocolMsg == Protocol.NONE) {
 
-                String errorString = DateTime.now().toString() + origin.lastProtocol.name();
+                String errorString = Instant.now().toString() + origin.lastProtocol.name();
 
                 int errorCode = errorString.hashCode();