adding some support methods
added form#data_fields and fixed form#values_for_submission_id
various bug fixes
raise error if error is returned form submissions
Cleanup Rakefile, Gemfile, and gemspec files. Added simplecov support.
Avoid looking up form fields if we already have them loaded. Add specs for improved coverage.
Forgot to add the confirmation.json file.
white space changes
Merge branch 'refactor-helper-methods-out-of-tinderbox' of github.com:TinderBox/formstack into refactor-helper-methods-out-of-tinderbox

Conflicts:
	lib/formstack/restful_resource.rb