Fix all the open xml without utf-8 encoding
Fix all the open xml without utf-8 encoding


Former-commit-id: 1154df05080728dd3a53d6242dc6d4c8a9ff5963 [formerly 1154df05080728dd3a53d6242dc6d4c8a9ff5963 [formerly 762d5c5bf0910930a394350f0af948cebc536ff2]]
Former-commit-id: 5db831e6bc81fec898964e62da9bda63be9e91e2
Former-commit-id: 5ae616c0c14ea866c99e8c9f60c6e3b5d3e1f280
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine