Issue #270 - Add helper function to test that an element is not present.
Issue #270 - Test that form is hidden or shown depending on auth state.
Issue #270 - Look in the right place for linting tests.
Issue #270 - small tweaks
Issue #270 - Make sure form is hidden when logged out
Issue #270 - tests for comment buttons and posting comments
Issue #270 - Add comments test file to suite
Issue #270 - Remove unused helpers file.
Merge pull request #498 from webcompat/issues/270/2

Fixes #270 - tests for comments.