db/models:
db/models:

Implemented `__str__` and `__repr__` for HazardMap. This makes debugging, etc.
nicer.


Former-commit-id: 3dde922d06d3cb8a0b4b3020597bd18237661c2f [formerly e1ca0e72e5fa90649d0c11acdc6a97a224fe22fb]
Former-commit-id: 02326dba4362d562601885aa1ff26ce47a8dbda6
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine