Highlight Applications nav item when validation fails.

app/views/layouts/nav/_profile.html.haml

@@ -9,7 +9,7 @@
       = icon('gear fw')
       %span
         Account
-  = nav_link(path: ['profiles#applications', 'applications#edit', 'applications#show', 'applications#new']) do
+  = nav_link(path: ['profiles#applications', 'applications#edit', 'applications#show', 'applications#new', 'applications#create']) do
     = link_to applications_profile_path, title: 'Applications', data: {placement: 'right'} do
       = icon('cloud fw')
       %span