First pass at adding model organism life stages - warning: it's ugly
Updates to views.py for model organism life stages
Add model organism biosample tests
Add more worm_life_stages
Updated calculated prop mapping.
Merge branch 'model_organism_dev' into 1131-model_organism_life_stage
Fixed tests.
Resolved merge conflicts.
add YFP tag in construct
Merge branch '1131-model_organism_life_stage' of https://github.com/ENCODE-DCC/encoded into 1131-model_organism_life_stage
Fix fly life stage enum
Fix life stage term enums
Add more tests
Fix test donor example
Change type in worm AVA biosample to pass features test
Add egg laying worm synchronization stage
Resloved merge conflict.
Merge pull request #284 from ENCODE-DCC/1131-model_organism_life_stage

#1131 model organism life stage