update risklib calls and regression tests
update risk eb unit test
add insured_losses params to classical calc
Merge branch 'master' into revise-insured-losses
Merge branch 'fix-scenario' into revise-insured-losses
Merge branch 'master' of https://github.com/gem/oq-engine into revise-insured-losses
Merge pull request #1267 from matley/revise-insured-losses

Revise insured losses algorithm