Additions and Fixes!

* Added saveHasPermission to MessageReceivers for issueing permission checks without calling the PermissionCheck Hook
* Cleaned up a duplicate method from World
* Stopped groups parenting themselves (default group) to go nuts on permission checks,
where the parent list was resolving possibly causing stack overflows
* Fixed BackbonePermission so it would update paths correctly instead of adding new ones, causing logic dupes