Added custom no-cache headers
Added a hand-compiled version of Greed.js
DANGER! Half of GridDataSource has been rewritten!

- Formatters, filter and sort are now available as object properties.
- A refresh method has been added, which must be called manually.
- Private parts were removed and placed in the private closure.
- Implementation of GetRequestState was buggy which is now fixed and
working.
Added backbone-events to IRERPGridWebTest.

Exporting this object from Greed.js was not logical.