Added missing comments

client/data/src/main/java/container/DataController.java

@@ -1,3 +1,4 @@
+//Marc Beyer//
 package container;
 
 import com.fasterxml.jackson.core.JsonProcessingException;

client/data/src/main/java/container/Event.java

@@ -1,3 +1,4 @@
+//Marco Kühn//
 package container;
 
 import java.time.Duration;

client/data/src/main/java/container/HttpRequest.java

@@ -1,3 +1,4 @@
+//Marc Beyer//
 package container;
 
 import helper.Tuple;

client/data/src/main/java/container/User.java

@@ -1,3 +1,4 @@
+//Marco Kühn//
 package container;
 
 public class User {