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, 1 insertions, 1 deletions

diff --git a/app/views/admin/_menu.html.erb b/app/views/admin/_menu.html.erb
index 3188d94..6f217eb 100644
--- a/app/views/admin/_menu.html.erb
+++ b/app/views/admin/_menu.html.erb
@@ -1,5 +1,5 @@
 <%= language_selector %>
-<%= link_to 'Logout', logout_path, :method => :delete %>
+<%= button_to 'Logout', logout_path, method: :delete %>
 <%= link_to 'Overview', admin_path %>
 <%= link_to 'Nodes', nodes_path, selected?('nodes') %>
 <%= link_to 'Assets', assets_path, selected?('assets') %>