jshint bug fix.
Created a categories factory that exposes the getAllCategories function to retrieve from the DB all categories. Also added categories endpoint to the calendarconfiguration.js.
Modified the Evento Object to the new structure.
Mocked categories , Agencies, eventTypes. This should later be a restful call to the DB
Attached the session service to the addEvent.html and retrieving default values to populate the drop downs in the eventController
Modified eventService Test to reflect new ```event``` object. Fix typo in eventService.
Merge pull request #14 from miamidade/EventDetails-SessionService-Category

Event details session service category