Rename automated_testing.md to 6_automated_testing.md
Rename routes.md to 2_routes.md
Rename controllers.md to 3_controllers.md
Rename jquery_and_ajax.md to 7_jquery_and_ajax.md
Rename models_and_migrations.md to 1_models_and_migrations.md
Rename view_and_form_helpers.md to 5_view_and_form_helpers.md
remove trailing whitespace and rename files