Merge branch 'doc_update' into 'master'

README.md

app/translate/README.md

docs/docs/arch.md

docs/docs/auth.md

docs/docs/bundles.md

docs/docs/docker.md

docs/docs/index.md

docs/docs/install.md

docs/docs/policyservice-arch.png

docs/docs/policyservice-bundles.png

docs/docs/testing.md

docs/docs/translate.md

docs/docs/ui.md

docs/mkdocs.yml