app/views/devise/confirmations/new.html.haml
%h2 Resend confirmation instructions
= form_for(resource, :as => resource_name, :url => confirmation_path(resource_name), :html => { :method => :post }) do |f|
= devise_error_messages!
%div
= f.label :email
%br/
= f.email_field :email
%div= f.submit "Resend confirmation instructions"
= render "links"