app/views/account/change_password.html.erb
<h1><%= _('Change password') %></h1>
<%= error_messages_for :user %>
<%= form_tag({}, { class: 'change-password' }) do %>
<p><label for="password"><%= _('Current password') %></label><br/>
<%= password_field_tag :current_password %></p>
<p><label for="password"><%= _('New password') %></label><br/>
<%= password_field_tag :new_password %></p>
<p><label for="password_confirmation"><%= _('Confirm your new Password') %></label><br/>
<%= password_field_tag :new_password_confirmation %></p>
<% end %>
<%= button_bar do %>
<%= button(:back, _('Back to control panel'), controller: 'profile_editor', profile: user.identifier) %>
<%= submit_button(:save, _('Save')) %>
<% end %>