changed role representation to enum

src/main/java/mops/gruppen2/domain/Admin.java

@@ -1,4 +0,0 @@
-package mops.gruppen2.domain;
-
-public class Admin extends Role {
-}

src/main/java/mops/gruppen2/domain/Org.java

@@ -1,4 +0,0 @@
-package mops.gruppen2.domain;
-
-public class Org extends Role {
-}

src/main/java/mops/gruppen2/domain/Role.java

@@ -1,5 +1,5 @@
 package mops.gruppen2.domain;
 
-public class Role {
-
+public enum Role {
+    ORGA, ADMIN
 }