Move 2FA disable button

- Removed disable button from /profile/account
- Added disable button to /profile/two_factor_auth
- Changed 2FA breadcrumb from 'User Settings > Account > Account' to 'User Settings > Account > Two-Factor Authentication'

app/views/profiles/accounts/show.html.haml

@@ -17,10 +17,6 @@
       Status: #{current_user.two_factor_enabled? ? 'Enabled' : 'Disabled'}
     - if current_user.two_factor_enabled?
       = link_to 'Manage two-factor authentication', profile_two_factor_auth_path, class: 'btn btn-info'
-      = link_to 'Disable', profile_two_factor_auth_path,
-                method: :delete,
-                data: { confirm: "Are you sure? This will invalidate your registered applications and U2F devices." },
-                class: 'btn btn-danger'
     - else
       .append-bottom-10
         = link_to 'Enable two-factor authentication', profile_two_factor_auth_path, class: 'btn btn-success'

app/views/profiles/two_factor_auths/show.html.haml

 - page_title 'Two-Factor Authentication', 'Account'
-- add_to_breadcrumbs("Account", profile_account_path)
+- add_to_breadcrumbs("Two-Factor Authentication", profile_account_path)
 - @content_class = "limit-container-width" unless fluid_layout
 
 = render 'profiles/head'
@@ -18,7 +18,12 @@
         Use an app on your mobile device to enable two-factor authentication (2FA).
     .col-lg-8
       - if current_user.two_factor_otp_enabled?
-        = icon "check inverse", base: "circle", class: "text-success", text: "You've already enabled two-factor authentication using mobile authenticator applications. You can disable it from your account settings page."
+        %p
+          You've already enabled two-factor authentication using mobile authenticator applications. In order to register a different device, you must first disable two-factor authentication.
+          = link_to 'Disable two-factor authentication', profile_two_factor_auth_path,
+                method: :delete,
+                data: { confirm: "Are you sure? This will invalidate your registered applications and U2F devices." },
+                class: 'btn btn-danger'
       - else
         %p
           Download the Google Authenticator application from App Store or Google Play Store and scan this code.

changelogs/unreleased/fix-move-2fa-disable-button.yml

+---
+title: Move 2FA disable button
+merge_request: 16177
+author: George Tsiolis
+type: fixed

spec/features/u2f_spec.rb

@@ -264,7 +264,7 @@ feature 'Using U2F (Universal 2nd Factor) Devices for Authentication', :js do
       end
 
       it "deletes u2f registrations" do
-        visit profile_account_path
+        visit profile_two_factor_auth_path
         expect do
           accept_confirm { click_on "Disable" }
         end.to change { U2fRegistration.count }.by(-1)