Changed str->unicode
Changed str->unicode


Former-commit-id: e480357f3dbdab57ca32f55b66d9be957726b271 [formerly 619441a2d8ede1f4ddaf3334ed9530b753df8806]
Former-commit-id: 0ad1a98aed800516ce5e197782a425265b642d5b
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine