Added functions to Kodi Profile

[tdietrich67]

Would be nice to have Page Up and Page Down added to the Kodi template.  I use it often so you can scroll through your media quickly.  I got it using the keyboard template but it took me a bit to figure out I could go between them to add key maps.  

Thanks.

[yawor]

Yeah, there's no notion of controller in the Flirc itself. It only stores key codes and IR hashes. Many people get the wrong idea that they can use only a single controller in the GUI, where in fact the controllers in GUI are only to group different key sets (for example the Kodi controller is just a set of predefined keyboard shortcuts). I think this is more of a documentation issue than anything else.