Update favicon

Author: rafaelfranca

config/initializers/page_cache_logger.rb

@@ -0,0 +1,7 @@
+ActiveSupport::Notifications.subscribe("write_page.action_controller") do |event|
+  Rails.logger.info "Page cached: #{event.payload[:path]}"
+end
+
+ActiveSupport::Notifications.subscribe("expire_page.action_controller") do |event|
+  Rails.logger.info "Page expired: #{event.payload[:path]}"
+end