Unit Tests - confirmation

- Implemented unit tests to very that "confirmation=yes" works.
- Implemented unit tests to very that \n causes a re-prompt.
- Updated docs with regard to this fix, thanks to Bruce Dillahunty.

html/task.html

@@ -103,6 +103,8 @@
                   <li>Added support for the "weekdays" recurrence, which means a task can recur
                       five times a week, and not on weekends (thanks to Chris Pride).
                   <li>UTF8 text is now supported in task project names, tags and descriptions.
+                  <li>Fixed bug that caused the y/n confirmation on task deletion to ignore the
+                      Enter key and fail to re-prompt (thanks to Bruce Dillahunty).
                 </ul>
 
                 <p>