Update documentation and templates for new consent

docs/consent_tracking.md

@@ -81,9 +81,9 @@ should be a matter of `pip install Jinja2`. On debian, try `apt-get install
 python-jinja2`.
 
 Once this is complete, and the server has been restarted, try visiting
-`https://<server>/_matrix/consent`. If correctly configured, this should give
-an error "Missing string query parameter 'u'". It is now possible to manually
-construct URIs where users can give their consent.
+`https://<server>/_matrix/consent`. If correctly configured, you should see a
+default policy document. It is now possible to manually construct URIs where
+users can give their consent.
 
 ### Constructing the consent URI
 
@@ -106,6 +106,11 @@ query parameters:
    `https://<server>/_matrix/consent?u=<user>&h=68a152465a4d...`.
 
 
+Note that not providing a `u` parameter will be interpreted as wanting to view
+the document from an unauthenticated perspective, such as prior to registration.
+Therefore, the `h` parameter is not required in this scenario.
+
+
 Sending users a server notice asking them to agree to the policy
 ----------------------------------------------------------------
 

docs/privacy_policy_templates/en/1.0.html

@@ -12,6 +12,8 @@
     <p>
       All your base are belong to us.
     </p>
+    {% if not public_version %}
+      <!-- The variables used here are only provided when the 'u' param is given to the homeserver -->
       <form method="post" action="consent">
         <input type="hidden" name="v" value="{{version}}"/>
         <input type="hidden" name="u" value="{{user}}"/>
@@ -19,5 +21,6 @@
         <input type="submit" value="Sure thing!"/>
       </form>
     {% endif %}
+  {% endif %}
   </body>
 </html>