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

src/tests/recur.t

@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 6;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'recur.rc')