Create a better landing page for Configure Discovery aftermath

After completing the Configure Discovery workflow and clicking "Save and Restart Discovery", the user is somewhat inexplicably taken to a list of events filtered on the word "Discovery". The user should instead get a landing page indicating that discovery has been configured and requested to restart, and the page should include a link to return to the Configure Discovery page, thereby removing the temptation to use the browser's "back" button as this will result in an NPE related to the user's session state.