Implemented better file/ folder access check for core ServeD-Node files.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Refactored several badly named vars.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Added error handler for initial (required) Publisher bind to tcp address.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>