Improved support for IR and RF air remote controls, gamepads...

I tried to switch channels using a 9,99€ "Leyf M8 Air Tastatur Maus" Controller for "Windows/Android/Mac OS/Linux" but it didn't work. It seems that there are different "standards" on the market, like MCE compatbile remotes, "air mouse controllers"...  So a kind of "learning" function would be great (like 'Press the button/key now which you want to use for "channel up"'...) 