Doc: Move properties of Locale QML type to correct module

Moves property and method documentation for QML Locale type
from Qt Quick to Qt Qml module, and fix a number of broken
links in locale-related docs.

Change-Id: Id9e01314ea867987f5159ca3bffcc40abb27b289
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>