Improvements for Mobile App

[#1]

The mobile app is great, but it would be more useful with the following updates:

The ability to favorite tasks like you can on the desktop version.

The ability to filter out completed tasks on a project

Seeing proof approvals in the "Approvals" section on the app

Marking notifications as unread (when you read a notification, there is no way to mark it as unread once you've clicked on it.)

Logging PTO