Find a solution to allow json posts

When doing a `$http.post(url, data)` the `data` gets not recognized by `self.request` in Views. See: http://stackoverflow.com/questions/19254029/angularjs-http-post-does-not-send-data

Zope seems not to understand json serialized post data.

Start by reproducing the `$http.post(url, data)` case from the linked Stack Overflow report and inspect how `self.request` is handled in Views. Trace whether the JSON-serialized request body reaches Zope as expected; done means the posted data is recognized by the View without breaking existing posts.

Written by the indexing model from the issue text.