Mega Changes rlvex

Added ability to use Legacy Name in chat commands, interchangeable with uuid
Added "<prefix>ex add Joe Res" as chat command to add someone without settings (makes Joe Res appear in the Others menu), & "<prefix>ex add" to bring up the "exceptions>add" scanner/menu
Added timer-event failsafe to "llRequestAgentData" segment - to prevent loss on entry of object uuids (dataserver event never occurs if Agent is not a valid user uuid)
Added requirement of "ex " as prefix to all rlvex commands (other than "<prefix>ex" & "<prefix>menu exceptions"), facilitating speedy FALSE returns.
Added "mini-translator" into UserCommand segment to allow n/add/enforce or y/rem/exempt entries from users (not sure about you, but n=add always did confuse the hell outta me, enforce is easier to understand)
Shaved the trailing "s" from "secowners" in button-names/commands, for uniformity with "owner" button-names/commands.
Made a shatload of spacing changes randomly throughout the script... oh wait, that wasn't me, the stupid Copy+Paste does that on its own.
meeps

/me blushes
menu_exceptions was getting sent back false due to incorrect variable check.
Merge pull request #16 from JoyStipe/Issue#1544

Mega Changes rlvex (issue 1544)