Add support for Integrated Windows Authentication for Box Drive login flow
Integrated Windows Authentication (IWA) allows for the following login flow for the webapp:
- User logs into Windows
- User goes to Box and selects to use SSO to login
- When the user is redirected to their Identity Provider, the browser sends the user's OS credentials and the user does not need to enter credentials again
- User is logged into Box
This would provide a more seamless experience for users. In our computer labs, users would sign into Windows, click one button in the Box Drive login window, and have access to their Box content natively in the OS.