[iptvsimple] new version 1.9.3.

- added setting to disable cache m3u/epg
- added support &lt;icon src=""/&gt; for programme in epg
- added possibility to specify logo path as URL
- changed tvg-logo should contains full logo filename (with extention)
- changed don't try download xmltv if it doesn't load after 3 attempt.

@opdenkamp, please merge this.