* reran the simple form initializer.
* wrapped submit buttons are now broken and need a fix.
* disabled confirmation validation in client side validations as the
  error message always is attached to the wrong field.

The Active::Model modules of client side validations only get included
in CouchRest::Model::Base if the gems are loaded in the right order:

* activemodel is required first so the modules to extend are present
* client_side_validations is required next so its modules get included
* couchrest_model is required last so it includes the enhanced modules.
\

our special error handler for json requests would turn all exceptions
into 500s - removed it. now the rescue_responses can do their thing
again.

This will get us encrypted cookies but also requires changes to the platform.
fixes #23

enable testing error responses on the full rack stack.

That's the only thing the controller handles meaningful.
Before the route would also catch anything that started with a . interpreting
it as a format string. This lead to lots of false positives in our security
scanner.