Eosc data transfer:

- add and use separate property for login url
- use new API url

utils/dataTransfer/transferData.component.ts

@@ -35,7 +35,7 @@ export class EGIDataTransferComponent {
   subscriptions = [];
   accessToken =  null;
   @Input() dois;
-  loginURL = properties.environment == "development"? "http://rudie.di.uoa.gr:8580/openid_connect_login":"https://explore.eosc-portal.eu/egi-login-service/openid_connect_login"
+  loginURL = properties.eoscDataTransferLoginUrl;
   sourceUrls = [];
   selectedSourceUrl = null;
   destinationPath = "";   

utils/properties/env-properties.ts

@@ -143,5 +143,6 @@ export interface EnvProperties {
   egiNotebookLink?: string;
   connectPortalUrl?;
   eoscDataTransferAPI?;
+  eoscDataTransferLoginUrl?;
   eoscDataTransferDestinations?;
 }