job/validation:
job/validation:

Added missing `time_event_is_valid` function.


Former-commit-id: 2189889cb11169138579d5a555f2d08be68e4ace [formerly da650092d1c34d1d08bcda4199c7982764eb8ad9] [formerly da650092d1c34d1d08bcda4199c7982764eb8ad9 [formerly 6f6ec246755dfa37d8411c50865f58bc10968df1]]
Former-commit-id: 53a0b49bcd4330bf226bbb76b23050d65651c713
Former-commit-id: a06a22b3c1fa16b3df0fb8994039c98b66616f2e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine