removed api module
added calculators module
added the workflows module
added event based bcr
added scenario
added new test module
fix problems in computing fractions
added workflow test module
added documentation
more docs
Merge branch 'master' of http://github.com/gem/oq-risklib into risk-calculator-refactoring
added python-mock debian dependency
fix quantile maps generation
wrong dependencies management in packager.sh script
added workflow tests
Merge branch 'risk-calculator-refactoring' of http://github.com/gem/oq-risklib into risk-calculator-refactoring
improved coverage on calculators module
added test for scenario damage calculator
added more tests for workflow
play nicely when working with an empty set of assets