.qbs/Mac: build tools without app bundle and install to right location

Change-Id: I422835b2e85600846aec4d309249059acf1fa483
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Bookmarks: Ask for confirmation before removing all bookmarks

Change-Id: Ib55d38269e6a2c5a28d320b115d3491a4e1b479b
Reviewed-by: Eike Ziller <eike.ziller@digia.com>