CSV file is now deleted after download.  Removed 'resque' from gemfile
as the solution did not require a background job (and there is nothing
else in the interface that requires a background job right now)

 On branch master
 Your branch is up-to-date with 'origin/master'.

 Changes to be committed:
	modified:   exzerco-mate-webui/Gemfile
	modified:   exzerco-mate-webui/Gemfile.lock
	modified:   exzerco-mate-webui/app/controllers/machines_controller.rb