SF: Start with hbuf at 0 (reverts setting to 1/2 of max).
Rework parts of permissions.

Changes are mostly backwards compatible.

Fixed:
* Filter permissions were wrong (not starting with nocheatplus).

Changed:
* Commands are grouped under nocheatplus.command now.
* Notification permission is independent of the notify command,
	 changed to nocheatplus.notify.

New:
* Shortcut permissions (nocheatplus.shortcut...) for safer use.
* Shortcut permission for testers: nocheatplus.tester
Change feature (filter) permissions to nocheatplus.filter...