changelog: add setup.py improvements and celeryconfig path changes
changelog: add setup.py improvements and celeryconfig path changes

Former-commit-id: ed6d8f9234116cd4abadd29b75d76e66ebcb0559 [formerly 76d35270a02703aa70bf88c047c9b4b7f398665c] [formerly 76d35270a02703aa70bf88c047c9b4b7f398665c [formerly 195b30c95464f32edd7f47a2319eef55180e2c37]]
Former-commit-id: 5b5911aec7b4ed0a104cfbbcdfd74787991e0e21
Former-commit-id: 14d45d618b2fee0bc284af840f139597b0dbbde8
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine