#361 distinguish expansion / holiday flag causing a spawn to be omitted vs spawn error on populating zone

Trying to distinguish the error message that we throw for failing to add a spawn, its too generic. If a expansion / holiday flag is required for a spawn, we will get a spawn warning message like this now: 23:22:57 W Spawn : Spawn (5590842) in spawn location id 445402 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) 23:22:57 W Spawn : Spawn (5590843) in spawn location id 445404 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) 23:22:57 W Spawn : Spawn (5590843) in spawn location id 445408 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) 23:22:57 W Spawn : Spawn (5590843) in spawn location id 445409 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) 23:22:57 W Spawn : Spawn (5590845) in spawn location id 445414 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) 23:22:57 W Spawn : Spawn (5590845) in spawn location id 445416 was skipped due to a missing expansion / holiday flag being met (ZoneServer::ProcessSpawnLocation) the message for adding spawns and erroring out has been defined to give more details as well: 22:56:03 E Zone : Error adding spawn by spawn location to zone Freeport with location id 444659, spawn id 123456789, spawn type 1.