Joao P Dubas f07965afa4 [extra-01] use date_range to represent training period
Adjust graphql training object and input to use date_range type as a
representation for period field.
2021-06-28 13:55:55 +00:00
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2021-06-22 01:55:16 +00:00
2021-06-22 01:55:16 +00:00