Merge pull request #124 from calpath/dev

Pull Changes into Master to separate from dev version 0.101
Merge branch 'master' of github.com:calpath/model-objects
Merge branch 'dev' of github.com:calpath/model-objects
Merge branch 'dev' of github.com:calpath/model-objects
Add missing unit tests to Dynamic Demands
Test new fields on DemandSet
Merge pull request #128 from javierhe/master

Dynamic Demands Unit Tests