Popup field group

Extends Field group module with ability to display group as a Popup.

Display as Popup can be used on "Manage form display" and "Manage display" pages.
Module uses Drupal 8: Modal API to display Popup.

How to use:

1. Install popup_field_group module
2. To use Popup on:
   • Entity add/edit form: Go to edit entity type "Manage form display" tab
   • Some entity display mode: Go to edit entity type "Manage display" tab and click by needed display mode subtab
3. Click "+ Add group" button
4. Choose "Popup" in a group type dropdown
5. Put a Label and click "Save and continue" button
6. Setup Popup parameters (or don't do any changes there) and click "Create group" button
7. By default Popup group will appears in Disabled section pull it up to a needed place
8. Add all needed fields to a Popup group (with placing it just below Popup group and move it right a bit)
9. Click "Save" button
10. Visit:
    • Entity add/edit form page, if Popup group was added to it
    • Page which display any entity with type and display mode (to which Popup group was added)