Added new command /staff run autoasign

* Added new command /staff run autoasign. This will force an auto asign
permissions check.
* Added permission 'staffinfo.run.autoasign'.
Updated Permissions

* Added new permissions methods.
Removed unnecessary debug messages
Added 'removePermission()' and 'addPermission()'

* Parameters: String player, String world, String permission
Updated to use new Vault Class API.
Removed unnecessary debug messages