Switch to GlModal for user confirmation dialogs

app/views/admin/users/show.html.haml

@@ -40,7 +40,7 @@
             %span.light= _('Secondary email:')
             %strong
               = render partial: 'shared/email_with_badge', locals: { email: email.email, verified: email.confirmed? }
-            = link_to remove_email_admin_user_path(@user, email), data: { confirm: _("Are you sure you want to remove %{email}?") % { email: email.email } }, method: :delete, class: "btn btn-sm btn-danger gl-button btn-icon float-right", title: _('Remove secondary email'), id: "remove_email_#{email.id}" do
+            = link_to remove_email_admin_user_path(@user, email), data: { confirm: _("Are you sure you want to remove %{email}?") % { email: email.email }, 'confirm-btn-variant': 'danger' }, method: :delete, class: "btn btn-sm btn-danger gl-button btn-icon float-right", title: _('Remove secondary email'), id: "remove_email_#{email.id}" do
               = sprite_icon('close', size: 16, css_class: 'gl-icon')
         %li
           %span.light ID:
@@ -56,7 +56,7 @@
           %strong{ class: @user.two_factor_enabled? ? 'cgreen' : 'cred' }
             - if @user.two_factor_enabled?
               = _('Enabled')
-              = link_to _('Disable'), disable_two_factor_admin_user_path(@user), data: { confirm: _('Are you sure?') }, method: :patch, class: 'btn gl-button btn-sm btn-danger float-right', title: _('Disable Two-factor Authentication')
+              = link_to _('Disable'), disable_two_factor_admin_user_path(@user), aria: { label: _('Disable') }, data: { confirm: _('Are you sure?'), 'confirm-btn-variant': 'danger' }, method: :patch, class: 'btn gl-button btn-sm btn-danger float-right', title: _('Disable Two-factor Authentication')
             - else
               = _('Disabled')