preserve route link after login

when clicking a route link but you are not logged in you are redirected to login but then after the authentication you can redirected to home page instead of the link you clicked.

it should redirect you to original link after login.

Start by reproducing the flow from a route link while logged out, then trace the login and authentication entry points to see where the original link is lost. Done means completing authentication returns the user to the route they initially selected instead of the home page.

Written by the indexing model from the issue text.