New algorithm that sends json document to statistics service

This was originally [trac #10559](http://trac.mantidproject.org/mantid/ticket/10559).

**To test:** You can [setup the server locally](https://github.com/mantidproject/webapp) or enable usage statistics and see that it can get to the [openshift server](http://django-mantid.rhcloud.com/api/usage). Also, you should make sure that instrument geometry downloading is still working as `InternetHelper` was refactored.