_form.html edited to include fields for Shortcut, Step, and Tag
form edit and create working on ONE step and ONE tag. need to add ability to add multiple steps and tags
look into ajax to add multiple steps
added TODO to new.html
new and edit forms working using nested forms from railscast episode 196
:dependent => destroy working for Step and ShortcutTag.
adding multiple steps and tags working with cocoon. need to clean up interface
moved link_to_add_association so that it only appears once regardless of number of steps/tags
cleaned up shortcut_tag.rb
updated #show action to display steps and tags