Fix for #584 - Securing Default Resource

- This secures the default resource the same way as normal resources are
secured
- It makes sure as one runtime policy says 'Off' that the others aren't
evaluated anymore
- Makes sure that if Glimpse default runtime policy is configured as
'Off' that the initialization marks the IsInitialized property as true
as well
Reformatted code to be in-line with the codebase
Re-added CreateAndStartGlobalExecutionTimer...

... to the Initialize method, because although it seems unnecessary, it
actually prevents the alternate dependency resolver to fail when used
during initialization. See commit
https://github.com/Glimpse/Glimpse/commit/1c5a5857b6f1ff3d167065a3d4402d1f787063ae
Merge pull request #586 from Glimpse/no584-securing-default-configuration-resource

Fix for #584 Securing default configuration resource