[fixes #19 & #22] Downgrade bourbon

Downgrade bourbon for compatibility with active-admin/sass 3.0.
using vcr
Remove deprecated and unused test code

There were two depcrecated statements in the Guardfile (:cli and
:version).  I also removed some code that is not used in the
spec_helper.
Fix i18n deprecation warning

This fixes the depcrecation warning by setting the
enforce_available_locales value.  See http://stackoverflow.com/
questions/20361428/rails-i18n-validation-deprecation-warning
Merge pull request #18 from 18F/feature/remove_deprecated_and_unused_test_code

Remove deprecated and unused test code
Merge pull request #19 from 18F/feature/fix_i18n_deprecation_warning

Fix i18n deprecation warning
Merge pull request #11 from adelevie/feature/test_markdownifier

Integrate vcr + test markdownifier
Merge pull request #12 from 18F/feature/fix_scss_cache

[fixes #19 & #22] Downgrade bourbon
Some cleanup, plus updating factories for future tests
Initial tests for guides, small guide tweaks
Initial tests for article dashboard
Making Quick Answers easier to add/view plus tests
Using older version of nokogiri because running into errors
Merge branch 'moar-tests-and-admin-betterness'
Simplify user/category/contact views and forms

Don't need to show so much info, it's confusing
Add tests for all that too
Merge branch 'simplify-user-contact-category'
Adding memcachier gem, since it's needed
Fixes deprecation warnings with formtastic

This fixes the depcrecation warnings with formtastic. I also updated
ActiveAdmin to v0.5.1. We will still need to remove
ActiveAdmin::Dashboard which is also depcrecated as of v0.6.0 (see #11
& #12).
Removes .env file from repo and creates sample file

I think this falls in the category of app instance or user specific info
and hence it should not be included in the repo.
[Fixes #10] Move factories to spec/factories