
Handles #/VE/token links from confirmation emails sent by Gerrit by redirecting to /settings/VE/token and validating the token using REST API. Errors and success messages are shown as a pop-up toast using gr-alert via show-alert DOM event handled by gr-error-manager. Feature: Issue 4196 Change-Id: Ia6d40894512cd77b4d19f88668af15c68f03b10d