add percentage information to repository language bar

app/assets/stylesheets/pages/projects.scss

@@ -830,6 +830,14 @@
   }
 }
 
+.repository-language-bar-tooltip-language {
+  font-weight: $gl-font-weight-bold;
+}
+
+.repository-language-bar-tooltip-share {
+  color: $theme-gray-400;
+}
+
 pre.light-well {
   border-color: $well-light-border;
 }

app/helpers/repository_languages_helper.rb

@@ -13,6 +13,7 @@ module RepositoryLanguagesHelper
     content_tag :div, nil,
       class: "progress-bar has-tooltip",
       style: "width: #{lang.share}%; background-color:#{lang.color}",
-      title: lang.name
+      :data => { :html => true},
+      title: "<span class=\"repository-language-bar-tooltip-language\">#{lang.name}</span>&nbsp;<span class=\"repository-language-bar-tooltip-share\">#{lang.share.round(1)}%</span>"
   end
 end