[Front-end] [#81] Using the new api/activities?include=activityJoined for the list of all activities, also using api/activities/{id}?include= for the detailed page. Haven't worked out the problem with showing list of participants as the directive requires a promise returned. Also refactored a little of http and authentication to remove usage of PostSvc (Depreciated)
[Front-end] [#138] [#139] [#81] Participants now work correctly