Enable email_spec helpers+matchers for all specs
Enable email_spec helpers+matchers for all specs

email_spec was being added to specs of type :mailer, :feature,
and :job. I also needed it in :request specs, so that would have
brought the total to 4 spec types being mentioned in the config for
email_spec, and this would likely grow in the future.

Now including email_spec in all spec types so its there when its
needed. Devs using this config in their own projects will not be
tripped up by email_spec not being available in some specs.

As a bonus, this fixes #45 "Fix email_spec.rb duplicate :type key
warnings"[0]

[0] https://github.com/eliotsykes/rspec-rails-examples/issues/45

nysthee/rspec-rails-examples,vinhnglx/rspec-rails-examples,rubentrf/rspec-rails-examples,gurgelrenan/rspec-rails-examples,gurgelrenan/rspec-rails-examples,eliotsykes/rspec-rails-examples,rubentrf/rspec-rails-examples,gurgelrenan/rspec-rails-examples,nysthee/rspec-rails-examples,vinhnglx/rspec-rails-examples,rubentrf/rspec-rails-examples,vinhnglx/rspec-rails-examples,eliotsykes/rspec-rails-examples,eliotsykes/rspec-rails-examples,nysthee/rspec-rails-examples