[#652] Provide more useful information if sql search goes wrong
Clean up test code
[#652][wip] Add actions to make datastore resources private or public
[#652] Refactor checks whether resources exist
[#652] Close connection, fix missing data_dict['connection_url']
[#652] Automatically make resources private or public when the permissions change
More helpful information about errors
[#652] Fix missing connection_url