little fixes for deploy

app/services/follow_service.rb

@@ -4,7 +4,7 @@ class FollowService
 
   def self.follow(entity, user, reason)
 
-    #return unless is_tester(user)
+    return unless is_tester(user)
 
     follow = Follow.where(followed: entity, user: user).first_or_create
     if FollowReason::REASONS.include?(reason) && !follow.follow_reason.read_attribute(reason)

app/views/mailboxer/notification_mailer/new_notification_email.html.erb

@@ -2,5 +2,6 @@
 <div style="padding: 16px; background: white; text-align: left;">
   <%= raw @notification.body %>
   <p style="font-size: 12px;">Make sense with Metamaps</p>
+  <hr>
   <%= render partial: 'shared/mailer_unsubscribe_link' %>
 </div>

frontend/src/components/NotificationIcon.js

@@ -18,7 +18,7 @@ class NotificationIcon extends Component {
     }
 
     return (
-      <a className={linkClasses} href="/notifications">
+      <a className={linkClasses} href="/notifications" target="_blank">
         <div className="tooltipsUnder">
           Notifications
         </div>