Fill in create, edit, update, and destroy for keyword mutes interface.

Also add a destroy-all action, which can be useful if you're flushing an
old list entirely to start a new one.

app/views/settings/keyword_mutes/index.html.haml

@@ -5,11 +5,14 @@
   %table.table
     %thead
       %tr
-        %th= t('settings.keyword_mutes.keyword')
+        %th= t('keyword_mutes.keyword')
+        %th= t('keyword_mutes.match_whole_word')
         %th
         %th
       %tbody
         = render @keyword_mutes
 
 = paginate @keyword_mutes
-= link_to t('settings.keyword_mutes.add_keyword'), new_settings_keyword_mute_path, class: 'button'
+.simple_form
+  = link_to t('keyword_mutes.add_keyword'), new_settings_keyword_mute_path, class: 'button'
+  = link_to t('keyword_mutes.remove_all'), destroy_all_settings_keyword_mutes_path, class: 'button negative', method: :delete, data: { confirm: t('admin.accounts.are_you_sure') }