Fix HELP layout

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

app/views/help/_layout.html.haml

 .row
-  .col-md-3{:"data-spy" => 'affix'}
+  .col-md-3
     %h3.page-title Help
     %ul.nav.nav-pills.nav-stacked
       - links = {:"Workflow" => help_workflow_path, :"SSH Keys" => help_ssh_path, :"GitLab Markdown" => help_markdown_path, :"Permissions" => help_permissions_path, :"API" => help_api_path, :"Web Hooks" => help_web_hooks_path, :"Rake Tasks" => help_raketasks_path, :"System Hooks" => help_system_hooks_path, :"Public Access" => help_public_access_path, :"Security" => help_security_path}
@@ -7,5 +7,5 @@
         %li{class: current_page?(path) ? 'active' : nil}
           = link_to title, path
 
-  .col-md-9.pull-right
+  .col-md-9
     = yield