INVESTIGATION_TIME/timespan should be float in the database
INVESTIGATION_TIME/timespan should be float in the database


Former-commit-id: 0490789cce95f47609a5afeca9a1f82fb81c84e0 [formerly 0490789cce95f47609a5afeca9a1f82fb81c84e0 [formerly 590150805e2a93d3b5da5c66dd6a9b79d3bcc620]]
Former-commit-id: a586ed6ef71c3cce7f71add75ec917425149e5c8
Former-commit-id: 797466ae708ca67b42f5d8426b6cc1b81e28035a
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine