Use mail() instead of devise_mail

The EnterpriseMailer used `devise_mail` to send confirmation
instructions. That call is more complicated than `mail` and added an
unwanted reply-to header.

app/mailers/enterprise_mailer.rb

@@ -11,12 +11,9 @@ class EnterpriseMailer < Spree::BaseMailer
   def confirmation_instructions(record, token, opts={})
     @token = token
     find_enterprise(record)
-    opts = {
-      subject: "Please confirm your email for #{@enterprise.name}",
-      to: ( @enterprise.unconfirmed_email || @enterprise.email ),
-      from: from_address,
-    }
-    devise_mail(record, :confirmation_instructions, opts)
+    mail(subject: "Please confirm your email for #{@enterprise.name}",
+         to: ( @enterprise.unconfirmed_email || @enterprise.email ),
+         from: from_address)
   end
 
   private

app/views/enterprise_mailer/confirmation_instructions.html.haml

@@ -1,14 +1,14 @@
 %h3
-  = t :email_confirmation_greeting, contact: @resource.contact
+  = t :email_confirmation_greeting, contact: @enterprise.contact
 %p.lead
-  = t :email_confirmation_profile_created, name: @resource.name
+  = t :email_confirmation_profile_created, name: @enterprise.name
 %p  
 
 %p.callout
   = t :email_confirmation_click_link
   %br
   %strong
-    = link_to t(:email_confirmation_link_label), confirmation_url(@resource, :confirmation_token => @resource.confirmation_token)
+    = link_to t(:email_confirmation_link_label), confirmation_url(@enterprise, :confirmation_token => @enterprise.confirmation_token)
 
 %p  
 %p

spec/mailers/enterprise_mailer_spec.rb

@@ -14,6 +14,7 @@ describe EnterpriseMailer do
       mail = ActionMailer::Base.deliveries.first
       expect(mail.subject).to eq "Please confirm your email for #{enterprise.name}"
       expect(mail.to).to include enterprise.email
+      expect(mail.reply_to).to be_nil
     end
   end
 
@@ -38,4 +39,4 @@ describe EnterpriseMailer do
     mail = ActionMailer::Base.deliveries.first
     expect(mail.subject).to eq "#{enterprise.name} is now on #{Spree::Config[:site_name]}"
   end
-end
+end