Reorganize documentation for new website (#213)

This PR should be merged after the new website is deployed.

- [x] Rename files
- [x] Add front matter section to all `.md` files in the book (necessary for Zola)
- [x] Change all internal links to use Zola's linking system that checks broken links
- [x] Some updates to documentation contents and organization

Co-authored-by: Alex Auvolat <alex@adnab.me>
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/213
Co-authored-by: Alex <alex@adnab.me>
Co-committed-by: Alex <alex@adnab.me>

1 files changed, 0 insertions, 48 deletions

diff --git a/doc/book/src/cookbook/exposing_websites.md b/doc/book/src/cookbook/exposing_websites.md
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-# Exposing buckets as websites
-
-You can expose your bucket as a website with this simple command:
-
-```bash
-garage bucket website --allow my-website
-```
-
-Now it will be **publicly** exposed on the web endpoint (by default listening on port 3902).
-
-Our website serving logic is as follow:
-  - Supports only static websites (no support for PHP or other languages)
-  - Does not support directory listing
-  - The index is defined in your `garage.toml`. ([ref](/reference_manual/configuration.html#index))
-
-Now we need to infer the URL of your website through your bucket name.
-Let assume:
-  - we set `root_domain = ".web.example.com"` in `garage.toml` ([ref](/reference_manual/configuration.html#root_domain))
-  - our bucket name is `garagehq.deuxfleurs.fr`.
-
-Our bucket will be served if the Host field matches one of these 2 values (the port is ignored):
-
-  - `garagehq.deuxfleurs.fr.web.example.com`: you can dedicate a subdomain to your users (here `web.example.com`).
-
-  - `garagehq.deuxfleurs.fr`: your users can bring their own domain name, they just need to point them to your Garage cluster.
-
-You can try this logic locally, without configuring any DNS, thanks to `curl`:
-
-```bash
-# prepare your test
-echo hello world > /tmp/index.html
-mc cp /tmp/index.html garage/garagehq.deuxfleurs.fr
-
-curl -H 'Host: garagehq.deuxfleurs.fr' http://localhost:3902
-# should print "hello world"
-
-curl -H 'Host: garagehq.deuxfleurs.fr.web.example.com' http://localhost:3902
-# should also print "hello world"
-```
-
-Now that you understand how website logic works on Garage, you can:
-
- - make the website endpoint listens on port 80 (instead of 3902)
- - use iptables to redirect the port 80 to the port 3902:  
-   `iptables -t nat -A PREROUTING -p tcp -dport 80 -j REDIRECT -to-port 3902`
- - or configure a [reverse proxy](reverse_proxy.html) in front of Garage to add TLS (HTTPS), CORS support, etc.
-
-You can also take a look at [Website Integration](/connect/websites.html) to see how you can add Garage to your workflow.