Provide a proper response for Later.notes when no notes are waiting.
Provide a proper response for Later.notes when no notes are waiting.

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