Enhancement - added echo of id, description

- Added an echo of the ID and description of the task for the start,
  stop, do, undo, delete and undelete commands.  Thanks to Bruce
  Dillahunty.
- Updated documentation.
- Added "echo.command=no" to delete.t, undo.t because the default
  value is "yes", which breaks tests.
- Fixed syntax errors in utf8.t
- Corrected expected number of tests in recur.t

html/task.html

@@ -105,6 +105,9 @@
                   <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).
+                  <li>Added support for the "echo.command" configuration variable that displays
+                      the task affected by the start, stop, do, undo, delete and undelete
+                      commands (thanks to Bruce Dillahunty).
                 </ul>
 
                 <p>