Date Range in a collapsible details element

Problem/Motivation

If I create an exposed filter with a date range and make it collapsible the collapsible filter shows the title but is missing the date range. The date range should be shown. NOTE: creating the date filter with an operator that has just one field (such as 'equals') results in the detail collapsed element working as normal

Steps to reproduce

1. Add an exposed Filter Critera date single filter with the 'between' operator to create a date range between 2 dates and give it a title ('Date')
2. Enable BEF Exposed Filter Settings for the date filter and select Jquery date picker.
3. In Advanced Filter Options enable 'Make filter options collapsible'
4. Click 'Apply' and save the view.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes