ng-model-options with datepicker #5825

Bug description:

When using ng-model-options="{updateOn: 'blur'}" with the UIB Datepicker, the calendar does not disappear after selecting a date. Removing ng-model-options="{updateOn: 'blur'}" makes the calendar work again. ng-model-options="{updateOn: 'default blur'}" also does not work.

Expected Results:
ng-model-options="{updateOn: 'default blur'}" or ng-model-options="{updateOn: 'blur'}" should work.
https://docs.angularjs.org/api/ng/directive/ngModelOptions

Link to minimally-working plunker that reproduces the issue:

http://plnkr.co/edit/LyWR5miigK76tQo7OwuY

Version of Angular, UIBS, and Bootstrap

Angular: 1.4.0

UIBS: 1.1.2

Bootstrap: 3.2