remove unnecessary comment

make devise mailer use our own email template

Make Devise mailer use our own email template
remove redundant classes and styling

Remove redundant classes and styling

bring in horrendous markup

Remove redundant classes and styling
refactor email template a little for flexibility
Updated schema from running existing migrations
Moved greeting text into yaml
Extract all hard coded copy into yaml
Fix failing email scenario by setting host and port correctly. Explicitly name long index which was causing rspec to fail
correct spacing in yield calls
correct weird apostrophies and superflous spacing
Correct quotes
Merge pull request #743 from moneyadviceservice/email-template

Email template