Delete organisation functionality

src/Database/Seeds/OrganisationPermissions.php

@@ -49,6 +49,12 @@ class OrganisationPermissions extends BaseSeed
                 'conditions'  => 'always()',
                 'description' => 'Create a new organisation.',
             ]),
+            'delete_organisation' => new Permission([
+                'slug'        => 'delete_organisation',
+                'name'        => 'Delete organisation',
+                'conditions'  => 'always()',
+                'description' => 'Delete an organisation.',
+            ]),
             'uri_organisations' => new Permission([
                 'slug'        => 'uri_organisations',
                 'name'        => 'Organisation management page',
@@ -91,6 +97,7 @@ class OrganisationPermissions extends BaseSeed
         if ($roleSiteAdmin) {
             $roleSiteAdmin->permissions()->sync([
                 $permissions['create_organisation'],
+                $permissions['delete_organisation'],
                 $permissions['uri_organisations'],
             ], false);
         }