Move src/stylesprivate to src/styles/private

Change-Id: I86102ddb14371498b9451f247f1f709633e82458
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
TabBar: do not force squeeze the tabs

Let the style decide whether tabs should be squeezed or not.

Change-Id: I25bdd9a4d045583613e14b4cba680642eda2ab59
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>