Don't add log info messages when running tests

We use these messages in rake tasks, but when we run the test suite they
only add noise.

lib/application_logger.rb

@@ -1,6 +1,6 @@
 class ApplicationLogger
   def info(message)
-    logger.info(message)
+    logger.info(message) unless Rails.env.test?
   end
 
   def logger