Apply new GitLab UI for input field in user applications

app/views/doorkeeper/applications/_form.html.haml

@@ -3,11 +3,11 @@
 
   .form-group
     = f.label :name, class: 'label-bold'
-    = f.text_field :name, class: 'form-control', required: true
+    = f.text_field :name, class: 'form-control gl-form-input', required: true
 
   .form-group
     = f.label :redirect_uri, class: 'label-bold'
-    = f.text_area :redirect_uri, class: 'form-control', required: true
+    = f.text_area :redirect_uri, class: 'form-control gl-form-input', required: true
 
     %span.form-text.text-muted
       = _('Use one line per URI')