Regression with handling of ng-model-options timezone option

[antch]

Bug description:

When using datePickerPopup with a Date model, and ng-model-options.timezone set to UTC, the model is still being handled in the browser timezone. This case seems to be working properly in v1.3.3.

Link to minimally-working plunker that reproduces the issue:

http://plnkr.co/edit/n8j5znnVRbjHK0PlaNYw?p=preview

Note that the model is set to 1/1/2016 midnight UTC, yet the picker displays 12/31/2015 (if browser is behind UTC).
In addition, if you select new dates from the popup, the UTC label display above is mismatched from the date on the datepicker.

If you change the version of ui-bootstrap in the plunk from 2.0.0 to 1.3.3, the date correctly shows as 1/1/2016.

Version of Angular, UIBS, and Bootstrap

Angular: 1.5.x
UIBS: 2.0.0
Bootstrap: 3.2.x

[icfantv]

I spoke with @antch on Gitter and asked him to open this. I confirmed this is a regression.

[wesleycho]

Thanks for this - I will look into this within the next couple of days in depth. This appears to be a regression due to the separation of ngModelOptions configuration between the popup and inline datepickers.