Add optional signup.

app/views/devise/sessions/new.html.haml

@@ -13,7 +13,13 @@
     %br/
     = f.submit "Sign in", :class => "primary btn wide"
     .right
-      = render :partial => "devise/shared/links"
+      = link_to "Forgot your password?", new_password_path(resource_name), :class => "btn"
+    %br/
+    %br/
+    - if Gitlab.config.gitlab.signup_enabled
+      %hr/
+      Don't have an account?
+      = link_to "Sign up", new_registration_path(resource_name)
     .clearfix
     - if devise_mapping.omniauthable? && resource_class.omniauth_providers.present?
       %div