Fixed num_tasks [demos]
Fixed num_tasks [demos]


Former-commit-id: 260268bbb404a6a86621a079c242f4ccadeddd7d [formerly 6e5864eb857df915a162803f4711e2498b1a1765]
Former-commit-id: 9190bbfae77e7d17fe4289be605977cf4c488b30
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine