Add missing swagger-ui display options

[HEYGUL]

Having a look to swagger-ui configuration options, there are quite useful options not handled in the happi-swaggered-ui.

Especially these 3 properties.

Parameter Name	Description
defaultModelsExpandDepth	Number=1. The default expansion depth for models (set to -1 completely hide the models).
defaultModelExpandDepth	Number=1. The default expansion depth for the model on the model-example section.
defaultModelRendering	String=["example"*, "model"]. Controls how the model is shown when the API is first rendered. (The user can always switch the rendering for a given model by clicking the 'Model' and 'Example Value' links.)