teams: editors can't remove the last admin from a team.

pkg/models/team_member.go

@@ -42,9 +42,10 @@ type UpdateTeamMemberCommand struct {
 }
 
 type RemoveTeamMemberCommand struct {
-	OrgId  int64 `json:"-"`
-	UserId int64
-	TeamId int64
+	OrgId            int64 `json:"-"`
+	UserId           int64
+	TeamId           int64
+	ProtectLastAdmin bool `json:"-"`
 }
 
 // ----------------------