Fix deploying Qt on Mac (qt quick imports)

Since we are using Qt Quick 2 now, Qt Creator also needs to find the Qt
Quick 2 imports.
Also make qmlpuppet (Qt Quick 1) optional for deploying Qt.

Task-number: QTBUG-33545

Change-Id: I296e4b3a1827f7b26841e94e15eda718afef81d0
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>