Add ng words for post/update

app/views/admin/ng_words/show.html.haml

@@ -0,0 +1,14 @@
+- content_for :page_title do
+  = t('admin.ng_words.title')
+
+- content_for :header_tags do
+  = javascript_pack_tag 'admin', async: true, crossorigin: 'anonymous'
+
+= simple_form_for @admin_settings, url: admin_ng_words_path, html: { method: :post } do |f|
+  = render 'shared/error_messages', object: @admin_settings
+
+  .fields-group
+    = f.input :ng_words, wrapper: :with_label, as: :text, input_html: { rows: 12 }, label: t('antennas.edit.keywords_raw')
+
+  .actions
+    = f.button :button, t('generic.save_changes'), type: :submit