rails-3-develop branch now the default branch in github

[Louise Crow]

Hi,

Now that we're focusing on getting the Rails 3 upgrade to Alaveteli stable and releasing it, I've made the rails-3-develop branch the default branch in github (rather than develop), to reflect the fact that this is where ongoing development will be happening (apart from critical bugfixes). I don't think this should cause any particular problems, but if it does, let me know.

Cheers

Louise