Initial support for an expandable list view of models with children/nested models
- Support model-specific add/remove helper methods when updating collections
- Added InstanceAttributeTypeConverter to support AttributeType implementations
- Added styles for two-column add-edit screen
- Added code to serialize an array of models according to the model's schema
- Maintain id attribute for nested models
- Add urls to template context
- Add constructor options to use GenericModelSelect without a subclass
Merge branch 'develop' of github.com:OpenHMIS/openmrs-module-openhmis.backboneforms into develop