Stage 5 click-testing fixes

- Fix link_to :method → button_to for all PUT/DELETE actions
- Add button_to CSS reset to admin.css for visual consistency
- Fix admin layout: replace broken jquery/jquery_ujs pipeline refs with
  admin_bundle via sprockets; add sprockets-rails, jquery-ui-rails gems
- Add app/assets/javascripts/admin_bundle.js pipeline manifest
- Fix event_information helper: use safe_join to avoid double-escaping
- Fix nodes_helper: to_s(:db) → to_fs(:db) for event times
- Fix revisions view: eliminate nested forms; diff button uses vanilla JS
  to collect radio button values before POST
- Fix config/environments/development.rb and test.rb: cache_classes →
  enable_reloading
- Add routing_filter_rails71_patch.rb version guard
- Move LockedByAnotherUser to own file for Zeitwerk autoloading
- Fix Globalize fallbacks via config.i18n.fallbacks in application.rb

1 files changed, 3 insertions, 6 deletions

diff --git a/app/views/menu_items/index.html.erb b/app/views/menu_items/index.html.erb
index 7d0ce62..c52c150 100644
--- a/app/views/menu_items/index.html.erb
+++ b/app/views/menu_items/index.html.erb
@@ -14,12 +14,9 @@
     <td class="menu_item_title"><%= menu_item.title %></td>
     <td><%= link_to "Edit", edit_menu_item_path(menu_item) %></td>
     <td>
-      <%= link_to( 
-            "Delete", 
-            menu_item_path(menu_item),
-            :method => :delete,
-            :data => { :confirm => "Are you sure?" }
-          ) %>
+      <%= button_to "Delete", menu_item_path(menu_item),
+            method: :delete,
+            form: { data: { confirm: "Are you sure?" } } %>
     </td>
   </tr>
   <% end %>