Display warnings/errors from DrupalOrgJsonApi backend

Problem/Motivation

The Project Browser may become outdated vis a vis the API being provided by Drupal.org. Old clients may not support newer versions of the API. We need to let people know if they need to upgrade Drupal/Project Browser, based on the version of Drupal being used.

Proposed resolution

Display messages provided by Drupal.org that are given in the request from the parent issue.