[Feature] Add ability to choose date ranges to datepicker

[kpmurphh]

What is the feature that you would like to propose?

Currently the datepicker only allows you to pick one date at a time. UX is looking to add the ability to the datepicker to pick a range of dates the event someone wishes to do so.

Example:
Please see how this should look here (scroll down to "Day Calendar Choosing a Range"): https://tangoe.invisionapp.com/dsm/tangoe/tangoe-dsm/nav/5fa7cb5d8c0120001835592d/asset/5eeb95046c86c2574644998d

How UX would like the date range to work is exactly how Angular does it: https://material.angular.io/components/datepicker/overview