update to the last implementation
moved the no damage limit in the fragility function
Removed gmf_collection.complete_logic_tree_gmt and gmf_set.complete_logic_tree_ses
Removed complete_logic_tree_ses in the table ses and ses_collection
Fixed a comment
Merge pull request #1095 from gem/remove_complete_logic_tree_flags

Remove complete logic tree flags when redundant
Merge pull request #1090 from matley/fragility-sd-imt

Fragility model using structure dependent IMT
Merge branch 'master' of github.com:gem/oq-engine into dump_hazards
Merge branch 'dump_hazards' of github.com:gem/oq-engine into dump_hazards