Fixed JSON serialization error when running under Italian locale.
Fixed JSON serialization error when running under Italian locale.


Former-commit-id: ea019dbe806fbd0c5e27e970faadc9af71f4f7b6 [formerly 07ce99a9c29b7d0044191087964f6943aaba12f7]
Former-commit-id: 70798163282c070cc3e1575b3e462a5e15d9258f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine