Revert "Refactor classname."

This reverts commit 391cf259546a4de8d342683a4a7375cf3dde6b5d.
Added a new table view controller. Call detail view with a segue.
Add checklist data model. Add generic checklist items.
Display task name in top.
Add checklist items.
Add navigationcontroller.
Added two dimensional array (checklist + items).
Persist datamodel.
Added new data model.
Moved more logic to data model.
Display subtitle.
Added sorting.