Fix create URL using request or deleteFile params 

Previously, `deleteFile.params` were not being sent with delete requests, even after `setDeleteFileParams()` was called.

In ajax.requester.js `url` was set with `createUrl(id, params)` without `params` and before `params` were collected.

However, after setting `url` after `params` is set the `request.params` were being sent.

The method for getting parameters from parameter stores for request and deleteFile needed to be fixed.