Basic site flow improvements and devise handling

app/views/suppliers/sessions/new.html.slim

@@ -1,19 +1,14 @@
 h2= t('devise.sessions.title')
 = form_for(resource, :as => resource_name, :url => session_path(resource_name), html: {class: 'form-horizontal'}) do |f| 
   = devise_error_messages!
-  .control-group
-     = f.label :email, class: 'control-label'
-     .controls= f.email_field :email
-  .control-group
-     = f.label :password, class: 'control-label'
-     .controls= f.password_field :password
-  .control-group
-    .controls
-      = f.label :remember_me do
-        = f.check_box :remember_me
-        | 
-        = t('devise.sessions.remember_me')
-  .control-group
-    .controls
-      = f.submit t('devise.sessions.button'), class: 'btn btn-primary'
+  = f.row :email do
+    .form-label= f.label :email
+    .form-field= f.email_field :email
+  .form-row
+    = f.label :remember_me do
+      = f.check_box :remember_me
+      | 
+      = t('devise.sessions.remember_me')
+  .form-row
+    = f.submit t('devise.sessions.button'), class: 'new-session-button'
 = render "links"