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/safe_buffer.rb

@@ -0,0 +1,28 @@
+
+module ActionView #:nodoc:
+  class SafeBuffer < String
+    def <<(value)
+      if value.html_safe?
+        super(value)
+      else
+        super(ERB::Util.h(value))
+      end
+    end
+
+    def concat(value)
+      self << value
+    end
+
+    def html_safe?
+      true
+    end
+
+    def html_safe!
+      self
+    end
+
+    def to_s
+      self
+    end
+  end
+end