CLONE - A file can be picked from private files for a folder resource and a shortcut can be made.

Test Pre-requisites:
-The tester should be logged in as a teacher in a course.
-A folder resource should exist in the course and a file in the user's Private files.

Test Steps:
1. Navigate to the folder resource and click 'Edit'.
2. Click 'Add' and verify that the file picker is launched.
3. Select 'Private files'
4. Select a file, select the 'Create an alias/shortcut to the file' radio button.
5. Click 'Select this file' and verify that the files have been added.
6. Click 'Save changes' and verify that a shortcut has been added.