Unify "not logged in to NickServ" notices
Unify "not logged in to NickServ" notices

In some places, the bot says "not logged in to NickServ", while in other
places, it saays "not identified with NickServ". This changes all such
notices to use the first form.

Diitto/lykos,Agent-Isai/lykos,billion57/lykos,Cr0wb4r/lykos