Qnx: Adding BlackBerryPotentialKit

Kit Selection wizard page has a new section which leads to BlackBerry
Setup option page in case there is no valid and active BlackBerry API Level
available. To minimize impact on non-BlackBerry developers, the section
does not appear when there is no BlackBerry API Level registered.

Change-Id: I9d853e1827481a3673da0ab28dfe6434f598f0a1
Reviewed-by: Mehdi Fekari <mfekari@blackberry.com>
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
Reviewed-by: Daniel Teske <daniel.teske@digia.com>