* Added new ComponentEventBus, combined it with IEventBus.
* Removed all traces of IEntity from ComponentDependencies.
Removed IEntityManager dependency from ComponentManager.
* Added entity create/delete events to IEntityManager.
* ComponentEvents now use EntitySystemMessages instead of their custom ComponentEvent class.
* Component events are now just overloads of entity events.
* Removed obsolete EntitySystemMessage, now everything uses the base EntityEventArgs.
* Add a bool argument for if the message should be broadcast as well as directed.
Fix ordering and init issues of events in EntityManager.
* Changed names from Component/Entity events to Directed/Broadcast.
* Fix bugs and unit tests.
* Adds the SoundSystem static proxy class for the AudioSystem.
Added a shared IAudioSystem interface for the future.
* Moved ConnectedClient property from IPlayerSession down to ICommonSession.
* Connected up the SoundSystem to the client/server AudioSystems.
* Converted client calls over to the new system.
* Marked the old serverside functions to play sound obsolete, use the new ones from the IAudioSystem.
* Added ISharedPlayerManager to the IoC registration.
