Updated layout of ichain sign in page

app/views/devise/ichain_sessions/new_test.html.haml

@@ -0,0 +1,19 @@
+.container
+  .row
+    .col-md-6.col-md-offset-3
+      .panel.panel-default
+        .panel-heading
+          %h3.panel-title
+            Sign in (TEST MODE)
+        .panel-body
+          = semantic_form_for "", method: :post, enctype: 'application/x-www-form-urlencoded', url: @login_url do |f|
+            = f.input :username, input_html: { autofocus: true }
+
+            - if ::Devise.ichain_force_test_attributes.blank?
+              - @fields.each do |field|
+                = f.input "attributes[#{field}]", label: field.to_s.humanize
+
+            %p.text-right
+              = f.action :submit, as: :button, label: 'Sign In', button_html: { class: 'btn btn-success' }
+
+            = render partial: 'devise/shared/help'