Make parse.rb work.

It needed require rubygems.
Remove extraneous elements from index

Also add save/load buttons.
Remove extra inputs from view.

We didn't care about most inputs, so we removed them from input.yaml.

The other files changed because we reran parse.rb.
Remove extra fields from snippet templates.

We used to have help text and a size. Now we have neither. The templates shouldn't try to rely on those.
Add fieldtype to snippet model's getValues()

This lets us reconstruct the form from getValues();
Add toJSON function to my-form-snippets

This lets us export the collection more easily.
Add my-form-snippets-wrapper to simplify i/o.

The save-load-view controls saving and loading. Maybe this should be done inside the model.