Update connectivity and position info for Qt 5.3

New platforms added, related docs changes and broken links fixed.

Task-number: QTBUG-33603
Change-Id: Ieb6f1cd3ae1873b189432c1586c545c8b3d77c3b
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>