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


Former-commit-id: 1d2b7875c89a41cdd527267678e700edfc3455d7 [formerly ea019dbe806fbd0c5e27e970faadc9af71f4f7b6] [formerly ea019dbe806fbd0c5e27e970faadc9af71f4f7b6 [formerly 07ce99a9c29b7d0044191087964f6943aaba12f7]]
Former-commit-id: 70798163282c070cc3e1575b3e462a5e15d9258f
Former-commit-id: 7f42517ad464ae7fb34cb07441683bd5d0a23ade
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine