Added permbans command.
Added permbans command.

buildbot/supybot,haxwithaxe/supybot,mazaclub/mazabot-core,frumiousbandersnatch/supybot-code,raboof/supybot,mazaclub/mazabot-core,ProgVal/Limnoria-test,kblin/supybot-gsoc,prashantpawar/supybot-rothbot,Ban3/Limnoria,Ban3/Limnoria,ProgVal/Limnoria-test,jeffmahoney/supybot