Below the admin's firehose view, add a summary view of the channel's classifiers

These are to be a summary of the channel's activity to help the admin's decide how to classify the channel

The ui should include a dropdown and add button that allows the admin to provide feedback

@markeharding has the schema for the classifiers and we'll need to figure out how what feedback we'll need to allow

added scoped labels

changed weight to 6

added scoped label

marked this issue as related to engine#1268