Added the parameter hazard_calculation_id and hazard_output_id in OqParam
Small fixes to the validation
Renamed val->validator
Added a test for legacy calculation_mode in the risk configuration files
Merge pull request #33 from gem/remove-old-validation

Rewritten the openquake validation mechanism; now it is done in commonlib
Fixed management of incrementalMFD
Merge branch 'master' of github.com:gem/oq-commonlib into nonparametric
Fixed a merge error
Better management of 3D points
Full support for LiteralNodes