- Added private method _isAllowed to controller system/Filters
- The method _isAllowed is called in the controller constructor and checks if the caller has the permission to read data with this instance of the FilterWidget
- The permission is given as parameter when calling the FilterWidget, the parameter is called requiredPermissions
- Updated the view system/infocenter/infocenterData to give the infocenter permission to the FilterWidget
- Changed the logic into the FilterWidget to manage the requiredPermissions parameter