time_series and serve_table update
mock.py: generate_timeseries now intervals by dt while considering edge cases correctly (generate_timeseries) serve.py: serve_table now returns a list of dictionaries for fields (serve_table)
mock.py: generate_timeseries now intervals by dt while considering edge cases correctly (generate_timeseries) serve.py: serve_table now returns a list of dictionaries for fields (serve_table)