wiki: fix titles with invalid space characters.

Fix wiki pages that have titles containing space characters.

script/fixes/065_fix_invalid_wiki_page_titles.rb

@@ -0,0 +1,21 @@
+#!/usr/bin/env ruby
+
+require_relative "../../config/environment"
+
+CurrentUser.user = User.system
+CurrentUser.ip_addr = "127.0.0.1"
+
+# Fix wiki page titles containing invalid space characters.
+WikiPage.transaction do
+  WikiPage.where("title ~ '\\s'").find_each do |wiki_page|
+    wiki_page.normalize_title
+    wiki_page.save!
+  # handle name conflicts
+  rescue ActiveRecord::RecordInvalid
+    wiki_page.normalize_title
+    wiki_page.title = "#{wiki_page.title}_#{wiki_page.id}"
+    wiki_page.save!
+  ensure
+    puts "wiki id=#{wiki_page.id} title=#{wiki_page.title}"
+  end
+end