Dashboard:
 * initialize only first slide and register swiperCreated callback in SwiperService to initialize rest of the slides
 * merged dashboard slides into dashboardSlide template and dashboardSlideDirective and removed single dashboard templates
 * public getFirstDateOfTheWeek and getFirstDateOfTheMonth methods in DateService

* Fixed NoteService getArchivedNotes method to return archivedNotes array instead of activeNotes array
* MockTaskBackendService mockCompleteTask method sets current time to task's complete key
* Refactoring