Detailed changes:
> 	Fix bug 983:
> 	* vars.el.in (kom-highlight-conferences): Added highlighting of no
> 	presentation and supervised conferences to the default.
>
> 	* faces.el (kom-active-strikethrough-face): New face.
> 	(kom-active-highlight-face): New face.
> 	(kom-face--default--active-strikethrough-face): New face.
> 	(kom-face--default--active-highlight-face): New face.
> 	(kom-face--user-defined--active-strikethrough-face): New face.
> 	(kom-face--user-defined--active-highlight-face): New face.
>
> 	* lyskom-buttons.el (lyskom-highlight-has-no-presentation): New
> 	function.
> 	(lyskom-highlight-i-am-supervisor): New function.
> 	(lyskom-highlight-function-get-conf-stat): New function.
>
> 	* option-edit.el (lyskom-face-widget): Handle explicit list of
> 	faces.
>
> 	* lyskom-buttons.el (lyskom-default-button): Pass
> 	conf-stat/uconf-stat/whatever to lyskom-default-button. Use
> 	uconf-stat instead of conf-stat when looking in the cache.
> 	(lyskom-generate-button): Support functions in
> 	kom-highlight-conferences.
>