Disable the building of the crontab by default

Rather than having to SSH in and remove the crontab manually don't build
one by default and then SSH in for the first server deployed.

lib/package_builder.rb

@@ -501,7 +501,7 @@ def after_install_script
 
       # Run cron jobs only on workers, as webservers autoscale up and down.
       # ${SERVER_TYPE} is pre-populated for the deploy user by the build scripts
-      su - deploy -c 'if [ ${SERVER_TYPE} = "worker" ] ; then cd /home/deploy/epetitions/current && bundle exec whenever -w ; else echo not running whenever ; fi'
+      # su - deploy -c 'if [ ${SERVER_TYPE} = "worker" ] ; then cd /home/deploy/epetitions/current && bundle exec whenever -w ; else echo not running whenever ; fi'
     SCRIPT
   end