Move doc from the index to the overview page

Cleanup the links.

And doc fix in TableViewStyle.qml

Change-Id: Id61fcff49af79f35f68696900142bb200ae18042
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Reviewed-by: Nico Vertriest <nico.vertriest@digia.com>