Time Off Icon & Time Off Notifications

Description - Add the time off icon (airplane) next to the assignees name that has already been assigned a task. Also, adding a notification to project owners that someone assigned to their task has added time off.

Why is this feature important to you - Make it easier for Project Owners to track time off for their tasks assignees. 

How would you like the feature to work - When a user puts in Time off, a little airplane would pop up next to their name on the task they are currently assigned too. Also, if the users puts in time off and they are assigned to a tasks, the project owner gets a notification letting them know this user has time off and its pushing back their dates.

Current Behaviour - The time off icon only appears as you are assigning tasks, not after the task is assigned. There are currently no notifications around time off for Project Owners.