Added check to emailer concern (#550)

app/controllers/concerns/emailer.rb

@@ -36,10 +36,14 @@ module Emailer
   end
 
   def send_user_promoted_email(user)
+    return unless Rails.configuration.enable_email_verification
+
     UserMailer.user_promoted(user, root_url, logo_image, user_color).deliver_now
   end
 
   def send_user_demoted_email(user)
+    return unless Rails.configuration.enable_email_verification
+
     UserMailer.user_demoted(user, root_url, logo_image, user_color).deliver_now
   end
 
@@ -58,10 +62,14 @@ module Emailer
   end
 
   def send_approval_user_signup_email(user)
+    return unless Rails.configuration.enable_email_verification
+
     UserMailer.approval_user_signup(user, admins_url, logo_image, user_color, admin_emails).deliver_now
   end
 
   def send_invite_user_signup_email(user)
+    return unless Rails.configuration.enable_email_verification
+
     UserMailer.invite_user_signup(user, admins_url, logo_image, user_color, admin_emails).deliver_now
   end