Now with cleaner participants in the responses

ref #6

src/models/responses/ResponsePermission.ts

@@ -4,9 +4,9 @@ import {
     IsObject
 } from "class-validator";
 import { Permission } from '../entities/Permission';
-import { Principal } from '../entities/Principal';
 import { PermissionAction } from '../enums/PermissionAction';
 import { PermissionTarget } from '../enums/PermissionTargets';
+import { ResponsePrincipal } from './ResponsePrincipal';
 
 /**
  * Defines a track of given length.
@@ -23,7 +23,7 @@ export class ResponsePermission {
      */
     @IsObject()
     @IsNotEmpty()
-    principal: Principal;
+    principal: ResponsePrincipal;
 
     /**
      * The permissions's target.
@@ -39,7 +39,7 @@ export class ResponsePermission {
 
     public constructor(permission: Permission) {
         this.id = permission.id;
-        this.principal = permission.principal;
+        this.principal = permission.principal.toResponse();
         this.target = permission.target;
         this.action = permission.action;
     }