Move EE differences for app/views/admin/appearances/_form.html.haml

Move EE differences for app/views/admin/appearances/_form.html.haml

diff --git a/home/yorickpeterse/Projects/gitlab/gdk-ce/gitlab/app/views/admin/appearances/_form.html.haml b/home/yorickpeterse/Projects/gitlab/gdk-ee/gitlab/app/views/admin/appearances/_form.html.haml
index 544f09048f5..c8517c2babe 100644
--- a/home/yorickpeterse/Projects/gitlab/gdk-ce/gitlab/app/views/admin/appearances/_form.html.haml
+++ b/home/yorickpeterse/Projects/gitlab/gdk-ee/gitlab/app/views/admin/appearances/_form.html.haml
@@ -37,6 +37,8 @@
         %br
         Images with incorrect dimensions are not resized automatically, and may result in unexpected behavior.
 
+  = render partial: 'admin/appearances/system_header_footer_form', locals: { form: f }
+
   %fieldset.sign-in
     %legend
       Sign in/Sign up pages: