Enable authorizations w/ dummy-auth (#158)

* Enable authorizations w/ dummy-auth

* fixed: some tests run in privileged mode

* Fixed tests to skip auth

* npm test --silent

* Added dependency to passport

bookshop/srv/admin-service.cds

@@ -1,5 +1,5 @@
 using { sap.capire.bookshop as my } from '../db/schema';
-service AdminService @(requires_:'admin') {
+service AdminService @(requires:'admin') {
   entity Books as projection on my.Books;
   entity Authors as projection on my.Authors;
 }

bookshop/srv/cat-service.cds

@@ -5,6 +5,6 @@ service CatalogService @(path:'/browse') {
     author.name as author
   } excluding { createdBy, modifiedBy };
 
-  @requires_: 'authenticated-user'
+  @requires: 'authenticated-user'
   action submitOrder (book : Books:ID, amount: Integer);
 }