Fix NOS Registration with existing account on Wizard

When trying to register on NOS with an existing account, after login in and selecting your project, when you click Continue on the popup it should close and redirect you to the next step on wizard.

What is happening is that the popup is not closing and stays in blank.

Note :as a workaround you can close the popup and continue the configuration

How to reproduce:

• download a new nuxeo .exe setup from community
• install and run the nuxeo app
• on wizard procede on the configuration steps until Nuxeo Online Services part
• on the popup go to "click here" to login with an existing NOS account
• login
• choose your project and click on Continue
• pop up stays in blank (bug)

This only happens on windows and IE11