Now prompting the error messages to the user, reporting the failure cause.
Notification title and first line (context depending) are implemented as strings.
Adding sorting by program's name, to partially solve issue #1.
Removed a duplicated get_episodi call that was throwing unmanaged errors.
Added or BadStatusLine to the error catch expression to manage HTTP errors
Merge branch 'heads/master' into issue1. Issue #1 can be closed because Kodi (XBMC) remembers the user's sorting preference, so there is no need to implement such a specific function.