added support for tracking via piwik.

if piwik_id is not set no javascript will be included. it may be both enabled, aganalytics and piwik.

app/views/layouts/application.html.haml

@@ -57,6 +57,17 @@
         var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
         })();
 
+     -if APP_CONFIG[:piwik_id]
+       :javascript
+        var pkBaseURL = (("https:" == document.location.protocol) ? "https://#{APP_CONFIG[:piwik_url]}/" : "http://#{APP_CONFIG[:piwik_url]}/");
+        document.write(unescape("%3Cscript src='" + pkBaseURL + "piwik.js' type='text/javascript'%3E%3C/script%3E"));
+        try {
+        var piwikTracker = Piwik.getTracker(pkBaseURL + "piwik.php", #{APP_CONFIG[:piwik_id]});
+        piwikTracker.trackPageView();
+        piwikTracker.enableLinkTracking();
+        } catch( err ) {}
+
+
     - if current_user
       %link{:rel => "alternate", :href => "#{current_user.public_url}", :type => "application/atom+xml", :title => "Public Diaspora Feed for #{current_user.real_name}"}
 

config/app_config.yml.example

@@ -68,6 +68,12 @@ default:
 
   #google analytics key, if false, it won't include the javascript
   google_a_site: false
+  
+  #piwik integration if not set, no javascript included
+  piwik_id: 
+  # the site url in raw format (e.g. pikwik.examplehost.com)
+  piwik_url: 
+  
 
   #cloudfiles username and api-key, used for backups
   cloudfiles_username: 'example'