PT:38146247 App landing page allows user to uninstall app if app is authorized. A previous version of this code went missing during a project rebuild
[Completes #42250697] Users can view Discovery Bar landing page on my.usa.gov
Remove .feature from authorization page so second line is not centered; change 'uninstall' to 'Revoke access' on the app description page.
Fix failing specs for change from uninstall to 'Revoke access.'