patch for issue with cache classes = false, stackoverflow

[banane]

Hi-
I have a patch that colleagues and I worked on. How do you want me to add it to the repo? The way we fixed:

In the tax_extensions.rb, added an "unless" condition around the alias_method_chain. The problem was- it would endlessly re-load the "children_find_options_without_drag_order" in certain situations. With config.cache_classes = false, and children:each tags, and in some installed gems/versions. The condition just checks as to whether the private class has been defined before doing the alias-chain.

base.private_method_defined?(:children_find_options_with_drag_order)

cheers
Anna

[banane]

I've also included the fix in my fork- that also has some UI stuff, so wasn't sure if folks wanted to merge that or not.