Security update

Fixes Storage API stream wrappers - Moderately Critical - Access bypass - SA-CONTRIB-2017-010

Fix security issue in nusoap library.

Fixed SA-CONTRIB-2016-013 (see https://www.drupal.org/node/2730827).

Fixes XSS vulnerability when using the "Include term description" option with exposed taxonomy filters. See SA-CONTRIB-2017-009.

This releases updates and fixes the dependency of a third party library Guzzle 5 to Guzzle 6.
See DRUPAL-SA-CONTRIB-2017-008

• Add missing oauth_callback_confirmed parameter
• #1238752: Postgres compatability