FE/BE Routes

[pvulakh]

Really great work on these! Just a few tweaks:

Backend Routes

companies routes:

• remove companies#show since users can't create stocks

watchlists routes:

• remove watchlists/:id/show since we won't work with single watchlist entities unless we're deleting

transactions routes:

• remove transactions/:id/show since we won't need to get a single transaction at any given time

Frontend Routes

• your user page looks like what the home page is for logged in users! Let's move this under the / frontend route and make a note that the home page is different when users are logged in vs. logged out