Rails 2.3.5

Upgrade to Rails 2.3.5.
Also work around this bug:
 https://rails.lighthouseapp.com/projects/8994/tickets/3524
created by the aforementioned
Rails release.

vendor/rails/actionpack/lib/action_view/erb/util.rb

@@ -18,6 +18,12 @@ class ERB
       s.to_s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }
     end
 
+    undef :h
+    alias h html_escape
+
+    module_function :html_escape
+    module_function :h
+
     # A utility method for escaping HTML entities in JSON strings.
     # This method is also aliased as <tt>j</tt>.
     #