Replace quest completion messages for more quests

I found some old community-given names for quests here: https://rsc.vet/wiki/index.php?title=2001scape#Quests

Some of these are passable as what it might have said in game, and some are not.

I would change Shield of arrav message to "shield quest", restless ghost to "ghost quest", demon slayer to "demonslayer", ernest the chicken to "machine quest", imp catcher to "impcatcher", and Goblin diplomacy to "goblin quest". But these are just feelings & not screenshots from the original game, which would be preferable.