clirec display table uses underscore's template for rendering.

Rendering is no longer done via DOM manipulation.
clirec model: deleted upload_before_id field.
clirec detailed url in upload template gotten from clirec serializers.

Previously i was hardcoding the view name in the template using
{% url %} template tag.
field created_on dropped from clirec model.
clirec display shows how many instances per dr/cr/swift/flex.