piwik_site_id: ID of your website in Piwik
piwik_enabled: Enable Piwik
demo_mode_enabled: "Enable demo mode ? (only used for the wallabag public demo)"
piwik_site_id: ID of your website in Piwik
piwik_enabled: Enable Piwik
demo_mode_enabled: "Enable demo mode ? (only used for the wallabag public demo)"