Merge branch 'master' into docker-h2-migration-instructions

...s-eb-docker/cloudformation-elasticbeanstalk.json.template

bin/aws-eb-docker/functions

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

.../administration-guide/images/remapping/custom-mapping.png

docs/administration-guide/images/remapping/fk-mapping.png

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

docs/operations-guide/running-metabase-on-docker.md

docs/operations-guide/start.md

docs/users-guide/04-asking-questions.md

frontend/src/metabase/admin/settings/selectors.js

src/metabase/integrations/ldap.clj

test/metabase/integrations/ldap_test.clj