bug 1109994: Show doc deleter for moderators
bug 1109994: Show doc deleter for moderators

If a user has the permission to restore a document, show who deleted the
document.

This was removed for all visitors in PR #2951, but requested to be kept
for admins in a staff-confidential bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=1109994#c22

Elchi3/kuma,jwhitlock/kuma,jwhitlock/kuma,escattone/kuma,SphinxKnight/kuma,SphinxKnight/kuma,a2sheppy/kuma,SphinxKnight/kuma,mozilla/kuma,mozilla/kuma,mozilla/kuma,a2sheppy/kuma,jwhitlock/kuma,jwhitlock/kuma,SphinxKnight/kuma,a2sheppy/kuma,Elchi3/kuma,SphinxKnight/kuma,a2sheppy/kuma,SphinxKnight/kuma,a2sheppy/kuma,mozilla/kuma,mozilla/kuma,Elchi3/kuma,escattone/kuma,Elchi3/kuma,jwhitlock/kuma,Elchi3/kuma,escattone/kuma