Ability to exclude projects or tasks from a timesheet

[#1]

Description -  As a Project Owner or User, I want the ability to exclude project or tasks from my timesheet.  

Why is this feature important to you - This is important to a user because this creates clutter and confusion. A user may want to assign or be assigned to tasks for system alerts or workflows, but should not track time to that project or task. 

How would you like the feature to work - Expand the existing feature that disables the ability to log time or preventing users from logging time to a project to also exclude the project or task from the timesheet. 

Current Behaviour - As System Admin, I am able to disable users from logging time at the project level, but when assigned to a task it still shows up on a users timesheet.

This would also help to support the limit of 45 tasks automatically populated to a timesheet by excluding those that should not appear.