Display footer_email in confirmation emails correctly

A bug introduced in a9c37c162e caused the
creation of confirmation emails for shops to fail. The email template
got fixed now and the email address from the database is displayed if
present.

app/views/shared/mailers/_social_and_contact.html.haml

@@ -24,6 +24,5 @@
               %h5
                 = t :email_contact
               %strong
-                %a{href: ContentConfig.footer_email.reverse, mailto: true, target: '_blank'}
-                  #{ContentConfig.footer_email}
+                = mail_to ContentConfig.footer_email
       %span.clear

spec/mailers/order_mailer_spec.rb

@@ -40,5 +40,12 @@ describe Spree::OrderMailer do
       ActionMailer::Base.deliveries.count.should == 1
       ActionMailer::Base.deliveries.first.to.should == [@distributor.email]
     end
+
+    it "sends an email even if a footer_email is given" do
+      # Testing bug introduced by a9c37c162e1956028704fbdf74ce1c56c5b3ce7d
+      ContentConfig.footer_email = "email@example.com"
+      Spree::OrderMailer.confirm_email_for_shop(@order1.id).deliver
+      ActionMailer::Base.deliveries.count.should == 1
+    end
   end
 end