Updated configuration files
Added jars for the OAuth controller.

This will later on be handled by Maven. But for now just to see if it
works we do it this way.
Added a navigation file.
Created the client user class.
Created a class to handle the redirection to google login page.
Created a utils class to get the accessToken from the accesCode
Navigation configuration
This is the page where we will get the access code from the URL.