form_fieldset_collapser
No security coverage
Simple lightweight module to open and collapse all fieldsets and detail sections of forms.
Features
Adds "open all" and "collapse all" to the top of forms by form ID to allow users to open and collapse all fieldsets on that form.
Post-Installation
Visit /admin/config/user-interface/form-fieldset-collapser and add form IDs of forms to add the open and collapse links to.