Added the script correct_complex_sources
Merge pull request #1539 from gem/correct_complex_sources

Added the script correct_complex_sources
Merge branch 'master' of https://github.com/gem/oq-engine into better-risk
Changed the RiskModels
Merge branch 'better-risk' of github.com:gem/oq-engine into better-risk
Fixed risk/base.py
Merged from better-risk