Extracted http into services module and set up unit tests
Added unit tests
Completed unit tests for controllers and changed to a regular post of form

Changed the posting of the form of participants from url-coded to
posting the json object and parsing it with bodyParser.json().
Easier $http.post code, keeping the json object.
added more units test, rewriting tets for controller
finished writing unit tests for now, minor change in service.js
Merge remote-tracking branch 'origin/HenrikTesting'