Now adds machines from csv files.  'Exercise type', must be listed in the
csv header as 'exercise' though.  Weight data from csv is not added at all.

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

 Changes to be committed:
	modified:   app/controllers/exzweights_controller.rb
	modified:   app/controllers/machines_controller.rb
	modified:   app/models/exzweight.rb
	modified:   app/models/machine.rb
	modified:   app/views/layouts/application.html.erb
	modified:   app/views/machines/index.html.erb
	modified:   config/routes.rb