Added in more properties and extended enums.
Added in fly and worm donors.
Merge branch 'master' into model_organism_dev
Seperation of model organism and human specific properties in donors and biosamples.
Updated calculated properties.
Updated upgrade script.
Merge branch 'master' into model_organism_dev
Fixed upgrade script.
Updated test.
Fixed tests and refactored upgrade script.
Fixed style.
change infection to exposure; fix term_id regex
Add tests
Fix a few JSON test examples
Merge remote-tracking branch 'origin/model_organism_dev' into 1458-treatment_type_enum_change
Fix NULLs in lab.json
Add promoter properties in construct
Merge pull request #259 from ENCODE-DCC/1458-treatment_type_enum_change

change infection to exposure; fix term_id regex
Merge pull request #262 from ENCODE-DCC/1177-worm_promoters

#1177 worm promoters
First pass at adding model organism life stages - warning: it's ugly