Default FileBasedSimdata storage locations

Default FileBasedSimdata 'store' & 'oldstor' to predefined
'Data/*'locations instead of blank
Additional explanation comments
Remove hardcoded port definitions & GridInfo updates

- Default web server port to the main serve unless specified
- Default Gridinfo port to the main server instance (uri:port)
- Additional Gridinfo setup to assume several defaults for the builtin
webpages
- Correct OSSL_Api to return the main server instance URI
  (Corrects login issues)
- Update example config files