DateInput in Storybook throws an error

[rgaban]

• Issue #460: DatePicker throws error in StoryBook

Author Checklist

• [ ] Add unit test(s)
• [x] Update version in package.json (see the versioning guidelines)
• [ ] Update documentation (if necessary)
• [x] Add story to storybook (if necessary)
• [x] Assign dev reviewer

[rgaban]

@chawes13 I think I need a walk through on versioning guidelines so I fully understand 😬 another question I had is unit testing. I see that onBlur is invoked twice. Is that something I should fix or is it okay to expect that twice?