Drop patch level version from title of Qt 5.3 node

Do not mention the patch level of the Qt version in the qt node.
This reflects that we consider patch levels as mere 'updates' now.

The exact version is still listed in the package description.

Change-Id: I6d7fa333573bbd5e38a93e6f6a52fcc89c132052
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>