Merge pull request #347 from wardi/master

remove build_schema dir, schema.json now official source of schema
Change dataset comments code to use SQLAlchemy instead of psycopg2
Update the Readme file with Drupal info
Clean up some sloppy code and comments
Merge pull request #349 from thriuin/master

Clean up some sloppy changes and typos
Add new organization
Move Drupal comment code to its own module
Merge pull request #350 from thriuin/master

Move Drupal comment code to its own module and add a new organization to the schema
add validated_data_dict to solr schema