Rename globalize and change version to allow 4.0.0

Hi Guys,

I notice the globalize gem has had come name/version changes that breaks master.

It has moved form `svenfuchs/globalize3` to `globalize/globalize` and there is no longer a rails4 branch.

The rails 4 stuff is now in master and has the version 4.0.0.alpha.1

Is pages the only thing referencing globalize?