3.8

revamp of the prefix-changing - with bugfix for the message thing - took a lot of re-edits but I managed to test this in-SL & had to do one final edit on the listener script. What this will do: automatically stash prefix changes & notify/verify user of new prefix, retrieve prefix from settings whenever the listener script is reset (so customized prefix will carry thru), and notify new owner & wearer of correct prefix usage when new owner added. What it will not do: won't use prefix global variable anywhere other than listener & settings - it's wiped from auth entirely.
As a reminder, issue in jira is 1454... and let me know if I screwed up sending this pull request. I'm tryin' to get it right really