Added a new parameter complex_fault_mesh_spacing
Fixed 2 misprints
Merge pull request #92 from gem/complex_fault_mesh_spacing

Added a new parameter complex_fault_mesh_spacing
Added export of the collapse map
Some changes to the damage exporters; added expected files for scenario_damage/case_4
Changed general.groupby to return an OrderedDict
Implemented a DamageWriter class
Renamed the dmg keys to be consistent with the engine
Code cleanup
Fixed ordering on the Site objects
Refactored the scenario_damage QA tests
Small fix
Merged