Better Errors in DEV template

[James Powell]

New "Parameters" for Launch Actor mean that the DEV template can now have an error in starting. Need a much clearer error from the "Self: Error on Startup" case. Also, this case should call "Actor Shutdown", rather than just "Exit", in order to cleanup (and possibly shutdown helper loops).

[James Powell]

Changes:

Preregister, even on error in, as we want to allow Registering for Notification of the Startup Error
Also, return Startup Parameters even on error in, as they might hold references that need cleaning up
(The Actor will execute Shutdown and Notify of the Error)

[James Powell]

062a079ec95e7799c802cbd05a30b558d0506f62