(bug 18060) Lockandhide should be logged in the suppression log

If the "Account is hidden from public lists" it should really be
hidden, so that we log that in the suppress log now. This required
restricting the ability to hide accounts to user who can oversight.

Change-Id: I745d252056795fa3631e40f65f9aeef519c94fdb
Merge "(bug 18060) Lockandhide should be logged in the suppression log"