Merged with master

Gemfile

app/assets/javascripts/application.js

app/assets/javascripts/application/collections.coffee

...ssets/javascripts/application/learning_objects.coffee.erb

app/assets/javascripts/application/notice.coffee

app/assets/javascripts/application/reviews.js

app/assets/stylesheets/application/search.scss

app/controllers/application_controller.rb

app/controllers/v1/languages_controller.rb

app/controllers/v1/learning_objects/chunks_controller.rb

app/controllers/v1/mime_types_controller.rb

app/controllers/v1/object_types_controller.rb

app/controllers/v1/scores_controller.rb

app/controllers/v1/users/bookmarks_controller.rb

app/models/collection.rb

app/models/learning_object.rb

app/models/score.rb

app/models/topic.rb

app/models/topic_highlight.rb

app/models/topic_relationship.rb