Validaiton Report

Validation Report
  - Update IndexService to get missing field data from Solr
  - Model, controller, routes, and basic views for ValidationReport
  - Rake task to index sample invalid aggregation into Solr
My original motivation for not implementing the Blacklight paradigms was to keep it divorced from Solr.  But @mark if you think it would be worthwhile to implement the Blacklight paradigms here then I'm happy to make that change.  Eventually I think we should try to use Blacklight paradigms, I guess the question is just whether to do them sooner or later.