Remove the (we think) now unneeded will_paginate customization

We believe that this customization is no longer needed, and
in any case would need to be rewritten for will_paginate 3.0.4.
If any pagination bugs do arise, a test should be added that
reproduces that problem, since currently the tests pass without
this extension.
Merge branch 'rails-3-develop' into release/0.11

Merge in some updates to the 0.11 release, discovered on further
testing on a development server with the full data set.