Revert "Feedback link in footer should open in modal"

This reverts commit 6c721f9de7ef1b660947cafdee60768059d69810.
gracefully remove from CARRIER_URLS
Serve mini-manifest pointing to blocklisted package (bug 826427)
desktop add/edit review modal (bug 813754)
Let blocked files be downloaded (bug 826427)
don't show deleted apps in stats (bug 823734)
Bump app-validator (bug 826534)
uninitialized ratings shouldn't be null
Pass a null installer object to payment promise
brittle form names = broken tests
have longer lasting urls (check and verify), use uuid (bug 821347)
only check for recaptcha in the proper container
clean up feedback form on post
fix urls for tests
add google analytics to -dev
add GA to stage
add GA to prod
Accept Unicode slugs for marketplace (bug 813730)
proper error message if GOOGLE_ANALYTICS_CREDENTIALS is empty