Added CollectionSideFacets recommendation module and set it up to be active by default in collection view.

Made record router smart enough to figure out collection links even if not given a full record driver object.

Made record router a service rather than a static class to enable dependency injection and easier overriding.

Set up links to collection view rather than record view for appropriate records when collections are enabled.

Revised Solr Tree Data Source to use record drivers instead of direct array access to Solr response.

Created collection controller; for starters, just an extension of AbstractRecord with a few minor changes and some cloned Solr Record templates.