Add redirection and logout button to the login functionality #429

Job	Run time
pr-labelling / labeler	3s
markdown-check / markdown-check	17s
lint-test / lint-test	21s
build-and-push-gcr / build-push-image	3m 58s
repo-standard / validate-name	28s
build-and-push-gcr / remove-old-image	12s
	5m 19s

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