Retire semantic_form_for

Also a buttload of form cleanups...

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

@@ -0,0 +1,25 @@
+- if ENV['OSEM_ICHAIN_ENABLED'] != 'true'
+  = form_tag(new_user_session_path, class: 'form-horizontal') do
+    %legend
+      %span
+        Sign In
+    .form-group
+      %label{for: "user[login]", class: 'col-sm-2 control-label'}
+        Username
+      .col-sm-10
+        = text_field_tag 'user[login]', nil, placeholder: 'Username', class: 'form-control', required: 'required'
+    .form-group
+      %label{for: "user[password]", class: 'col-sm-2 control-label'}
+        Password
+      .col-sm-10
+        = password_field_tag 'user[password]', nil, placeholder: 'Password', class: 'form-control', required: 'required'
+    .form-group
+      .col-sm-12
+        %button.btn.btn-success.pull-right
+          Sign in
+    = render partial: 'devise/shared/openid'
+    %p.text-right
+      %a.small.btn.btn-default{"data-toggle" => "collapse", "data-target" =>  "#devise-help-sign-in"}
+        Need Help?
+      .collapse#devise-help-sign-in
+        = render partial: 'devise/shared/links'