Clear: Widget for Todoist

Invalid date

- Issue with multi day calendar tasks sometimes not showing correctly while in month view has been fixed.
- Login indicators not always reflecting current login status fixed.
- Name of currently logged in account is now listed for every account type when their corresponding icon is clicked in the main settings.
- And many other minor UI fixes and improvements.

- Todoist labels are now also available without Todoist premium, as per their new guidelines.