Merge branch 'feature-update-lo'

app/assets/images/geometry2.png

app/assets/stylesheets/application/form-wizard.scss

app/builders/learning_object/draft_builder.rb

app/controllers/application_controller.rb

app/controllers/chunks_controller.rb

app/controllers/learning_objects/build_controller.rb

app/controllers/learning_objects_controller.rb

app/models/concerns/thumbnailable.rb

app/models/learning_object.rb

app/models/learning_object/attachment.rb

app/services/learning_object_publisher.rb

app/services/thumbnail_service.rb

app/views/layouts/application.html.erb

app/views/layouts/learning_object_studio.html.erb

app/views/learning_objects/_form.html.erb

app/views/learning_objects/build/_file_upload_form.html.erb

app/views/learning_objects/build/select_thumbnail.html.erb

app/views/learning_objects/build/upload_attachments.html.erb

app/views/learning_objects/edit.html.erb

app/views/learning_objects/new.html.erb