Bug fixes and refactoring:
* Replaced drawer menu links with functions. Added toggleMenu call after location change to close drawer.
* Datepicker next/previous week arrows sets new active day as a same weekday than earlier.
* Renamed uncategorized tasks list to unsorted
* Fix inbox height on large screen size.
Onboarding:
* putAccoutPreferences method in AccountService
* preferences to Web Storage
* img folder for onboarding slide images