ApolMainWindow: revise policy and permmap loading for status messages
ApolMainWindow: revise policy and permmap loading for status messages

Revise ordering of initialization so log messages about permisison map and
policy loading can be seen on the status bar.  Also fix exception handling
so a failure loading the policy specified on the CLI is handled.

TresysTechnology/setools,TresysTechnology/setools,TresysTechnology/setools,TresysTechnology/setools