Fix redundant redirects between client and server

[PiyushChandra17]

Fixes #2992

Changes to the client side:

• Removed all auth checks ie. userIsAuthenticated, userIsNotAuthenticated, userIsAuthorized from routes.jsx file
• Deleted utils/auth.js file
• Deleted components/createRedirectWithUsername file

Changes to the server side:

• redirect '/sketches' and '/assets' to the url with the username
• if the user is logged in redirect '/reset-password' and 'reset-password/:reset_password_token' to '/account'

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[raclim]

Thanks for your work on this! This issue ultimately got addressed by an earlier PR (#2993). I'm sorry that we couldn't get this one in, but will continue to check out your other PRs!