Add explaination for address bar onions

will-fix: https://dip.torproject.org/web/support/issues/9

content/onionservices/onionservices-5/contents.lr

@@ -0,0 +1,26 @@
+model: _question
+---
+title: What do the different onion icons in the address bar mean?
+---
+seo_slug: address-bar-onion-icons
+---
+description:
+When browsing an Onion Service, Tor Browser displays different onion icons in the address bar indicating the security of the current webpage.
+
+![Image of a green onion](/static/images/green-onion.png)
+A green onion means:
+- The Onion Service is served over HTTP, or HTTPS with a self-signed certificate.
+
+![Image of a green onion with a lock](/static/images/green-onion-with-lock.png)
+A green onion with a lock means:
+- The Onion Service is served over HTTPS with a CA-Issued certificate.
+
+![Image of a green onion with a warning triangle](/static/images/green-onion-with-warning.png)
+A green onion with a warning triangle means:
+- The Onion Service is served over HTTPS with a CA-Issued certificate.
+- The webpage contains subresources served over HTTPS.
+
+![Image of a grey onion with a red slash](/static/images/grey-onion-with-red-slash.png)
+A grey onion with a red slash means:
+- The Onion Service is served over HTTPS with a self-signed or CA-Issued certificate.
+- The webpage contains subresources served over HTTP.