revise `retrieve.get_single_date_data_from_db`.

 1. Merge content from older `get_single_date_data_from_db_json()`.

 1. Now include default argument `output='dict of tuples'`.

   2. Options for `output` are ['dict', 'dict of tuples', 'JSON'].
Checking is done.
   2. for original tuple output, omit argument;
   2. for dictionary output, use `output='dict'`;
`dict of tuples`
   2. for JSONized dictionary output, use `output='JSON'`.