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/config.html

@@ -58,6 +58,13 @@
                   confirmation before deleting a task.
                 </dd>
 
+                <dt>echo.command</dt>
+                <dd>
+                  May be "yes" or "no", and causes task to display the ID and
+                  description of any task when you run the start, stop, do, undo,
+                  delete and undelete commands.  The default value is "yes".
+                </dd>
+
                 <dt>nag</dt>
                 <dd>
                    This may be a string of text, or blank.  It is used as a prompt