Service Update 1

* Changed: "EAccessViolation" errors shown with different message text

* Fixed: Processing of CR/LF characters (impersonation possibility in GCS)

* Fixed: help command

* Fixed: GCS will now carry PS

* Changed: Improved GCS' long-string handling

* Added: GCS will remember users for up to 10mins after they exit world

* Added: "chat:who" command

* Added: Users holding "SecurityMsg" ACL flag will be greeted

* Fixed: UI focus switches to the chat monitor after starting all instances

* Fixed: "ap:near #me#" (typo in code, not documentation)

* Fixed: Coordinate string parser now silently tolerates blank strings