Added email_campaign_api config
Added email_campaign_api config

gov delivery env vars
redis env vars
errbit env vars

Incorporating following comments:
-Fixing whitespace for consistency
-The name of app is now correct
-Removed diff irritation points

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet