Merge branch 'fix-mp4' into 'master'

Fix mp4

See merge request !452

app/models/learning_object.rb

@@ -120,6 +120,10 @@ class LearningObject < ApplicationRecord
     return attachment unless attachment.nil?
 
     unless attachments.blank?
+      if object_type.try(:name) == 'Vídeo'
+        at = attachments.where("name LIKE '%.mp4'").first
+        return at unless at.nil?
+      end
       at = attachments.find_by(bundle_name: 'ORIGINAL')
       at = attachments.first if at.nil?
       update(attachment: at)