Add analytics_anonymize_ip option to theme

docs/configuring.rst

@@ -15,6 +15,7 @@ For example:
     html_theme_options = {
         'canonical_url': '',
         'analytics_id': 'UA-XXXXXXX-1',  #  Provided by Google in your dashboard
+        'analythics_anonymize_ip': False,
         'logo_only': False,
         'display_version': True,
         'prev_next_buttons_location': 'bottom',
@@ -101,6 +102,14 @@ Miscellaneous options
     If specified, Google Analytics' javascript is included in your pages.
     Set the value to the ID provided to you by google (like ``UA-XXXXXXX``).
 
+.. confval:: analythics_anonymize_ip
+
+   :type: boolean
+   :default: ``False``
+
+   Enabling this will make it so the users’ IP addresses are anonymized
+   within Google Analytics.
+
 .. confval:: canonical_url
 
     :type: URL

sphinx_rtd_theme/layout.html

@@ -228,6 +228,9 @@
     })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
 
     ga('create', '{{ theme_analytics_id }}', 'auto');
+    {% if theme_analythics_anonymize_ip %}
+    ga('set', 'anonymizeIp', true);
+    {% endif %}
     ga('send', 'pageview');
     </script>
 

sphinx_rtd_theme/theme.conf

@@ -6,6 +6,7 @@ pygments_style = default
 [options]
 canonical_url =
 analytics_id =
+analythics_anonymize_ip = False
 collapse_navigation = True
 sticky_navigation = True
 navigation_depth = 4
@@ -15,4 +16,4 @@ logo_only =
 display_version = True
 prev_next_buttons_location = bottom
 style_external_links = False
-style_nav_header_background =
+style_nav_header_background =