* Fixes system message posted to Town Square when adding/removing team member (#6483)
Fixes unit test method call to match RemoveUserFromTeam modification (#6483)
Fixes system message posted to Town Square when adding/removing team member (#6483)
Removes unnessary error message
* Updates system message when a user leaves a team (#6483)
* Changes system message when a user is removed from team (#6483)
* Adds a new string to be post to town-square when a member is added to a team (#6483)