Adapting date format
remove salt, change timestamp
update test data to reflect changes
Merge pull request #60 from squirrelo/dbfix

Thanks @squirrelo!!
Merge branch 'master' of github.com:qiime/QiiTa into data_obj
cascade data and study on deletion
Merge pull request #62 from squirrelo/cascade

cascade data and study on deletion
Merge branch 'master' of github.com:qiime/QiiTa into data_obj
Adding get_filepaths functionality and tests
Fix typo
Adding some documentation