Actualizar plugin Checklists a 3.1.18 light

plugins/redmine_checklists/test/fixtures/checklists.yml

@@ -1,14 +1,25 @@
-# Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+---
+# === Checklist for Issue(1) ===
 one:
   id: 1
   is_done: false
   subject: First todo
   issue_id: 1
+
 two:
   id: 2
   is_done: true
   subject: Second todo
   issue_id: 1
+
+# === Checklist for Issue(2) ===
+section_one:
+  id: 4
+  is_done: false
+  subject: New section
+  is_section: true
+  issue_id: 2
+
 three:
   id: 3
   is_done: true