Prepare repo for deployment of onion service

- Add link to the footer
- Add _includes/onion.html (the address will be pulled from here anywere on the website)
- Add /onion.txt which is signed by binaryFate and contains the onion addresses
- Add onion-location header as a meta tag in _includes/head.html

Co-authored-by: binaryFate <binaryfate@getmonero.org>

README.md

@@ -58,6 +58,11 @@ A few random points of note:
 - If you want to add a new page to the navigation, you should go to ALL LANGUAGES in the `_data/lang` folder and add the page.
 - It is strongly strongly STRONGLY encouraged that if you make a change, you - at the minimum - test it on your local machine before submitting a PR. Sometimes unexpected things may happen due to a change. If you change a page, check the whole page on multiple screen sizes and browsers to make sure there wasn't any collateral damage.
 
+### Tor
+This website is available natively on Tor. The onion address is in `_includes/onion.html` and a signed document containing the same address is in `/onion.txt`. The address in these 2 files must *always* match. The `onion.txt` files also includes the onion address of the 'downloads' subdomain.
+
+If you want to post getmonero's onion address somewhere on the website, don't simply write it, instead include it using `{% include onion.html %}`. This avoids problems with typos and allow us top change the address only in one file if necessary.
+
 ## Translation
 In this section you'll find the info you need to translate a page and add a new translation, but keep in mind that Monero has a [Localization Workgroup](https://github.com/monero-ecosystem/monero-translations) who coordinate and give support to translators-volunteers. For live support/request of infos, come chat on `#monero-translations` (Freenode/IRC, riot/matrix, MatterMost).
 

_includes/footer.html

@@ -45,6 +45,7 @@
                 <div class="row center-xs">
                     <div class="footer-links">
                         <ul class="list-unstyled list-inline">
+                            <li><a href="{% include onion.html %}" class="white footer-link"><img class="tor" src="/img/onion-tor.svg" alt="onion service">Tor Onion Service</a></li>
                              <li><a href="{{ site.baseurl }}/legal/" class="white footer-link">{% t footer.legal %}</a></li>
                              <li><a href="https://github.com/monero-project/monero-site" class="white footer-link">{% t footer.source %}</a></li>
                              <li><a href="{{ site.baseurl}}/sitemap.xml" class="white footer-link">Sitemap</a></li>

_includes/head.html

@@ -41,6 +41,7 @@
     <meta property="og:site_name" content="{% t global.sitename %}">
     <meta property="og:url" content="{{ site.url }}/{{ page.url }}">
     <meta property="og:type" content="website">
+    <meta http-equiv="onion-location" content="{% include onion.html %}" />
 
     <link rel="apple-touch-icon" sizes="180x180" href="/meta/apple-touch-icon.png">
         <link rel="icon" type="image/png" sizes="32x32" href="/meta/favicon-32x32.png">

_includes/onion.html

@@ -0,0 +1 @@
+http://monerotoruzizulg5ttgat2emf4d6fbmiea25detrmmy7erypseyteyd.onion/

css/custom.css

@@ -2893,6 +2893,10 @@ footer a.white:hover, a.white:focus {
   padding-right: 0.2rem;
 }
 
+.footer-links img.tor {
+  vertical-align: top;
+}
+
 @media only screen and (max-width: 75rem) {
 
 }

onion.txt

@@ -0,0 +1,30 @@
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA256
+
+# This file contains the onion addresses used by getmonero.org and
+# downloads.getmonero.org
+#
+# You can check the signature against binaryFate key available in
+# Monero source code at utils/gpg_keys/binaryfate.asc.
+#
+# Main site (getmonero.org):
+http://monerotoruzizulg5ttgat2emf4d6fbmiea25detrmmy7erypseyteyd.onion
+# 
+# Download subdomain (downloads.getmonero.org):
+http://dlmonerotqz47bjuthtko2k7ik2ths4w2rmboddyxw4tz4adebsmijid.onion
+-----BEGIN PGP SIGNATURE-----
+
+iQIzBAEBCAAdFiEEgaxZH+nEtlxYBq/D8K9NRioL35IFAmAjBeIACgkQ8K9NRioL
+35JaTg/9GWJ7ogJD64TgtAKDV5vPH+mPVMQt47J0znMBhR3z++cNIaESh0mkpAje
+2YTRdTUjFUaZq8emosV+xdzo6KamfeA0hapVeI1zQ6eBNzjYIjN/jOD2/hcFi/6n
+3ywG7nmFlnnnSs8ef/MNXq0HiE8OsyQZfD1UBsIazIJTXr8aKvvsJG8IPmHggTr9
+mY7LIQdtA7wZqdaSpnN4Ah9HrRF3/b2b6Hwnz1ACbi8X4mdAQ07Y87GhowUWMwoV
+Ki0k+T500kA09AuS7RD0YDJxi3N4i7hU2d8vJCUlgGQMrdHZMZiy3DLVvZAdyOzR
+QnE4Y0Q3cBUcRRPIrAXNBbYWtUUNh1ujza4WanZ0FQrC9yDoldnTvQMUllOesakb
+7HyfY/ujPlbUfwP/SEQVizqnk/5IHSdSB1vDtxXf1kYJx2Dp05Fz/D32vGSXXLQi
+TSaVfHS0KYHzWOq362SJqhssZQ0MStbTxdKnzAYx1lBrrHE27Y64ek+uv4tNpDNe
+s/XqMS1+2wPc4ZSsyXAlcxbs/V6hJtGDOxr2UNiqOrjteSxJmxrkBHq9L/qrlUJo
+k/5nerhUtDUkHIMYaOpBJUbq+9RfiTlU8IU6mnVwPzSGxRgygcLxT1TmdAlhoZ/x
+a6a/heb6qLUNkBYZTLo9Hd9U2l6TyQ+WjD1UTafE7RkqU55zJ7g=
+=cZhI
+-----END PGP SIGNATURE-----