Add missing vcredist package into winrt offline installer

Change-Id: Ie0715a386960059b8a4e401293d89e73af372ca6
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Antti Kokko <antti.kokko@digia.com>
Fix incorrect license agreement label texts

The product name already has "Qt" in it.

Change-Id: I8287397c5ab6d21006a505073ffd3f8052886e8d
Reviewed-by: Antti Kokko <antti.kokko@digia.com>