When logging in via /login, the user is never passed along to a valid page

[ColeDCrawford]

See https://drive.google.com/file/d/1LGVdMB88Pde6gZ7NNZ-lETZbq7KoasQF/view?usp=sharing

Additionally, /login displays the same whether or not a user is authenticated (presenting username / password fields). It should probably redirect to /collections/user if the user is already logged in.