Allow people to create passwords during registration

[ianconsolata]

Some considerations before merging:

• What is the /login page for? When I go to it in my browser the style is way off (for some reasons it is including the header). But functionally, it seems to be doing the same thing as the /register page. Should I update it to accept a password as well, or should I just remove it?
• What do we actually want the validation / format for the username to be? For now, I just implemented the NSS requirements as stated ("Your username should only contain lowercase letters a-z and numbers 0-9 and without periods or spaces."), but I think it's a little too restrictive and we could maybe relax it a bit? Not totally sure what the downstream effects of that may be though. I think the only thing that this matters for is generating valid subdomains for the username, but I'm not certain.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/mysilio/garden/EUAHQrCbCaBUs2gkZtRPNxVrsANu
✅ Preview: https://garden-git-pages-registerjsx.mysilio.page

[travis]

looks good to me! I think I fixed the login page formatting in another commit so it should look at least a little better. It does feel like it will be useful to have a "login" page that's separate from register - even if they look about the same now they will diverge in the future with different messaging and affordances.

re: user names, going with NSS rules now sounds right, I don't have many preconceptions about the "right" rules for a username but happy to chat about that whenever!

[ianconsolata]

@travis you're also okay with the breaking change to switch to using the Staging pod host for all preview envs? That was in a later commit, but I forgot to note it in the main PR description. I think it will help us keep cleaner data state as we move to the new garden format, since we won't have to store the env folders anymore.

[travis]

yep! sounds like the right thing to me, would have thought it already worked that way