Fix a possible null ref in the LocalDataService.
Bit more changes to getting all asset IDs.
Fix more possible null refs...
Use a different thread pool for avatar packet handling, so that if the sim is disconnected from the server, the client will still be able to minimally function, rather than being stuck.
Plus minor cleanup from earlier me screwups.
Merge branch 'master' of git://github.com/aurora-sim/Aurora-Sim

Conflicts:
	Aurora/Services/DataService/Connectors/Database/Asset/LocalAssetMainConnector.cs

fixed