twbs3 for system hooks

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/admin/hooks/index.html.haml

@@ -8,17 +8,17 @@
 %hr
 
 
-= form_for @hook, as: :hook, url: admin_hooks_path, html: { class: 'form-inline' } do |f|
+= form_for @hook, as: :hook, url: admin_hooks_path, html: { class: 'form-horizontal' } do |f|
   -if @hook.errors.any?
     .alert.alert-danger
       - @hook.errors.full_messages.each do |msg|
         %p= msg
   .form-group
-    = f.label :url, "URL:"
+    = f.label :url, "URL:", class: 'control-label'
     .col-sm-10
-      = f.text_field :url, class: "text_field form-control input-xpadding"
-       
-      = f.submit "Add System Hook", class: "btn btn-create"
+      = f.text_field :url, class: "form-control"
+  .form-actions
+    = f.submit "Add System Hook", class: "btn btn-create"
 %hr
 
 -if @hooks.any?