Use auth0-react

[binh-dam-ibigroup]

This PR replaces the no-longer-maintained use-auth0-hooks library with its successor auth0-react.

This PR also improves the following:

• Logout redirects to the same server (previously, you could be redirected from e.g. localhost to a live instance).
• Login from a protected page/route is now supported (e.g. logging-in from /#/account shows the account page instead of the map)

Codewise:

• Auth0-react renames some props and higher-order components.
• Auth0-react requires we fetch Auth0 tokens ourselves.
• Auth0-react inserts some URL parameters, the PR adds code to remove those parameters.
• appState.returnTo is used where possible (fixes If logging out on local dev environment, does not redirect to localhost:9966 #253), method processSignIn is simplified.
• Constant URL_ROOT is replaced with the standard window.location.origin. (unchanged, see Use auth0-react #233 (comment))
• Improved passing props in withLoggedInUserSupport higher order component (removed renderChildrenWithProps util method.
• state.user.loggedInUserMonitoredTrips now asynchronously fetched after fetching state.user.loggedInUser.

[landonreed]

Haven't fully tested this yet, but it needs a couple of code changes/comments

[evansiroky]

Just one refactoring comment.

[landonreed]

See comments from phone discussion in addition to implementing snippet in create/init user:

const isNewAccount = fetchStatus === 'error' || (user && user.result === 'ERR')
const userData = isNewAccount ? createNewUser(authUser) : user
dispatch(setCurrentUser({ accessToken, user: userData }))
if (!isNewAccount) {
  dispatch(fetchUserMonitoredTrips())
}

[landonreed]

Looks good, just a couple of tiny loose ends.

[binh-dam-ibigroup]

FYI @landonreed and @evansiroky there are some not-so-obvious merge changes I addressed in b27eb18. This PR should be ready to merge now.

[landonreed]

🎉 This PR is included in version 1.5.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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