Enter QA environment with basic search/browse

  - Configure Solr
  - Add IndexService library
  - Index and delete sample data with rake task
  - Generate catalog controller to customize blacklight
  - Show search results in catalog home view
  - Basic keyword search
  - Refine search with facets
  - Show basic metadata for single record
Merge pull request #8 from dpla/enter-qa-environment

Enter QA environment with basic search/browse functionality