Fix new snippet tab highlight. Added new entries to changelog

CHANGELOG

@@ -14,6 +14,8 @@ v 5.3.0
   - Api: Smart deploy key add behaviour
   - Api: projets/owned.json return user owned project
   - Fix bug with team assignation on project from #4109
+  - Advanced snippets: public/private, project/personal (Andrew Kulakov)
+  - Repository Graph
 v 5.2.0
   - Turbolinks

app/views/layouts/snippets.html.haml

@@ -10,7 +10,7 @@
           = nav_link(path: 'dashboard#show', html_options: {class: 'home'}) do
             = link_to root_path, title: "Back to dashboard" do
               %i.icon-home
-          = nav_link(path: 'snippet#new') do
+          = nav_link(path: 'snippets#new') do
             = link_to new_snippet_path do
               New snippet
           = nav_link(path: 'snippets#user_index') do