[Commands] Cleanup #reloadzps Command. (#2129)

* [Commands] Cleanup #reloadzps Command.
- Cleanup messages and logic.
- Make reloading of zone points global instead of zone specific.

* Further cleanup.
- Add zone->GetZoneDescription().
- Add mob->GetTargetDescription(mob).

* Final cleanup.

* Typo.

zone/client_packet.cpp

@@ -799,9 +799,8 @@ void Client::CompleteConnect()
 		Message(
 			Chat::Yellow,
 			fmt::format(
-				"{} ({}) will expire in {}.",
-				zone->GetLongName(),
-				zone->GetInstanceID(),
+				"{} will expire in {}.",
+				zone->GetZoneDescription(),
 				time_string
 			).c_str()
 		);