update authentication system to Devise

app/views/devise/registrations/edit.html.erb

@@ -0,0 +1,30 @@
+<h2>Edit <%= resource_name.to_s.humanize %></h2>
+
+<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name), :html => { :method => :put }) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :login %><br>
+  <%= f.text_field :login, :autofocus => true %></div>
+
+  <% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
+    <div>Currently waiting confirmation for: <%= resource.unconfirmed_email %></div>
+  <% end %>
+
+  <div><%= f.label :password %> <i>(leave blank if you don't want to change it)</i><br>
+  <%= f.password_field :password, :autocomplete => "off" %></div>
+
+  <div><%= f.label :password_confirmation %><br>
+  <%= f.password_field :password_confirmation %></div>
+
+  <div><%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br>
+  <%= f.password_field :current_password %></div>
+
+  <div><%= f.submit "Update" %></div>
+<% end %>
+
+<h3>Cancel my account</h3>
+
+<p>Unhappy? <%= button_to "Cancel my account", registration_path(resource_name), :data => { :confirm => "Are you sure?" }, :method => :delete %></p>
+
+<%= link_to "Back", :back %>
+