Added some missing null=False in EventLossAsset
Added some missing null=False in EventLossAsset


Former-commit-id: bd9623079d645f445bc2f75d19aedb6591c749c5 [formerly 8659b1dac2736982f1edccb1d9a61260890f066a]
Former-commit-id: 215cf4fe5daaa699ebb830db3f250826d2ce1658
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine