provide global helper link_to_external

app/views/additionals/settings/_additionals.html.slim

@@ -1,7 +1,3 @@
 ' Need Help? :
-= link_to l(:label_additionals_doc), 'https://additionals.readthedocs.io/en/latest/',
-          class: 'external',
-          target: '_blank',
-          rel: 'noopener'
-
+= link_to_external l(:label_additionals_doc), 'https://additionals.readthedocs.io/en/latest/'
 = render_tabs additionals_settings_tabs

app/views/dashboards/blocks/_feed.html.slim

@@ -11,10 +11,7 @@
     - if feed[:items].count.positive?
       ul.reporting-list.feed
         - feed[:items].each do |item|
-          li
-            = link_to item[:title],
-                      item[:link],
-                      class: 'external', rel: 'noopener noreferrer', target: '_blank'
+          li = link_to_external item[:title], item[:link]
     - else
       p.nodata = l :label_no_data
   - elsif settings[:url].blank?

lib/additionals/helpers.rb

@@ -1,5 +1,15 @@
 module Additionals
   module Helpers
+    def link_to_external(name, link, options = {})
+      options[:class] ||= 'external'
+      options[:class] << ' external' if options[:class].exclude? 'external'
+
+      options[:rel] ||= 'noopener'
+      options[:target] ||= '_blank'
+
+      link_to name, link, options
+    end
+
     def additionals_list_title(options)
       title = []
       if options[:issue]