add columns to database
populate new cols for test
changes to data objects reflecting DB change
Merge branch 'finer-grain-procesessed-data', remote-tracking branch 'origin' into add-data-type-to-preproc-proc-data
finalize tests
fix sql_connection errors: iterable wasn't catching everything
fix base_handlers.py pep8 so travis passes
fixing @eldeveloper suggestions
Merge pull request #194 from squirrelo/add-data-type-to-preproc-proc-data

Add data_type_id column to preprocessed and processed data tables