Avoid render edit_form in each notes.

Use RJS to render edit note feature.

Before:

```
Rendered projects/notes/_note.html.haml (27.9ms)
Rendered projects/_zen.html.haml (0.3ms)
Rendered projects/notes/_hints.html.haml (0.7ms)
Rendered projects/_md_preview.html.haml (3.9ms)
Rendered projects/notes/_edit_form.html.haml (6.9ms)
Rendered projects/notes/_note.html.haml (17.7ms)
Rendered projects/_zen.html.haml (0.3ms)
Rendered projects/notes/_hints.html.haml (0.6ms)
Rendered projects/_md_preview.html.haml (3.4ms)
Rendered projects/notes/_edit_form.html.haml (7.0ms)
```

After:

```
Rendered projects/notes/_note.html.haml (13.8ms)
Rendered projects/notes/_note.html.haml (7.1ms)
Rendered projects/notes/_note.html.haml (9.5ms)
Rendered projects/notes/_note.html.haml (8.5ms)
```

This change reduce at least 6ms * N ('N' - number of notes).

1 files changed, 1 insertions, 1 deletions

diff --git a/config/routes.rb b/config/routes.rb
index 2028ea938e4..6b053124fea 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -658,7 +658,7 @@ Gitlab::Application.routes.draw do
           end
         end
 
-        resources :notes, only: [:index, :create, :destroy, :update], constraints: { id: /\d+/ } do
+        resources :notes, constraints: { id: /\d+/ } do
           member do
             delete :delete_attachment
           end