Fix I18n::InvalidLocale :root errors

- Fix Page.find(self.head) → self.head in node.rb wipe_draft!
- Migration to delete 407 spurious 'root' locale records from
  page_translations (Globalize artefact, all had nil titles and
  duplicate de/en translations existed for all affected pages)

1 files changed, 1 insertions, 1 deletions

diff --git a/app/models/node.rb b/app/models/node.rb
index a3ef23a..59a9d7c 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -137,7 +137,7 @@ class Node < ApplicationRecord
     end
     return unless self.head
     return unless self.draft.updated_at < 1.day.ago
-    return if Page.find(self.head).has_changes_to? self.draft
+    return if self.head.has_changes_to? self.draft
 
     self.draft.destroy
     self.draft_id = nil