Sprints: Deactivated user should be removed from Sprints

Issue Summary

Sprints: Deactivated user should be removed from Sprints

Steps to Reproduce

1. Login
2. Go to the Administration>People.
3. Deactivate any user that is assigned to Sprints in different States: Not Started, Planning, In Development, Completed. User should have some allocations. User should affect Existing financial reporting.
4. Check if the User still appears in the Sprints and if he is still affecting financial reporting.

Expected Results

Deactivated users should be removed from any future team sprints with the state "Not Started" or "In Planning". (future sprints should be determine based on start date is future from today's date). If the sprint start date is today's date or already past, but the sprint is still in "not started" or "in planning", then keep them on the sprint. 

If a user is deactivated, for any sprints already in "In Progress" or "Completed", keep them on the sprint member list, with a yellow icon next to them with hover-over "This user has been deactivated."

If a user is deactivated and removed from the team list and any "not started" or "in planning" sprints, then reactivated, we will not auto-populate them back to the team or sprint list.  

Actual Results

Deactivated user is removed from team member list but not from any of the team sprints. 

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available