Bug fixed - newly added items/labels were not sortable/draggable
Solution - remove the unnecessary "allowSortable()" function calls, and add <li> tags to newly created items
Allow saving of reordered lists by calling resave() in app.js from mouseStop() method in nestedSortable.js
Removed first level list element bullets by default via css
Fixed real cause of newly added items not being able to be dragged/moved after list has been CLEARED

The culprit was that an emptied checklist still had empty <li></li> list
Now, just use $('#checklist').empty() and clear everything inside