Fixed the seeds in the risk event based calculator
Merge branch 'master' of github.com:gem/oq-engine into fix-risk-seeds
Refactored the calculators in terms of the RiskModel class
Removed the dependency on the block size by not splitting in blocks
Merge branch 'master' of github.com:gem/oq-engine into fix-risk-seeds
Used the master seed
Used the master seed everywhere
Fixed the QA tests changed due to the change in the seeds
Restored the splitting per assets
Initial work on the GetterBuilder
Fixed the hazard getters tests
Changed all the calculators to use the GetterBuilder
Fixed the unit tests
Fixed scenario_damage
Fixed the scenario QA tests
Better logging and a check for no assets
Made the needed copies of the risk models
Change of API in the hazard getters
Now the GetterBuilders are build in parallel
Avoided making useless copies of the risk_model