Do not use don't, can't ... in output

Don't, Can't, etc abbreviations are used in informal speech. This is
okay in code comments etc, but user output should use the correct,
non-abbreviated terms.

Change-Id: I53c0dfa91596c151bfa7ef7b65f57d5084ceccde
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>