Merge branch 'master' of github.com:metabase/metabase into pivot-table-improvements

.circleci/config.yml

docs/administration-guide/02-setting-up-email.md

docs/administration-guide/03-metadata-editing.md

docs/administration-guide/04-managing-users.md

docs/administration-guide/05-setting-permissions.md

docs/administration-guide/06-collections.md

docs/administration-guide/07-segments-and-metrics.md

docs/administration-guide/08-configuration-settings.md

docs/administration-guide/09-setting-up-slack.md

docs/administration-guide/10-single-sign-on.md

docs/administration-guide/12-public-links.md

docs/administration-guide/14-caching.md

docs/administration-guide/15-whitelabeling.md

docs/administration-guide/16-authenticating-with-saml.md

docs/administration-guide/17-data-sandboxes.md

docs/administration-guide/18-authenticating-with-jwt.md

docs/administration-guide/databases/oracle.md

docs/administration-guide/images/JWT-auth-form.png

docs/administration-guide/images/oracle_jdbc_download.png

docs/administration-guide/images/saml-form.png