added decoding layer for HTLM encoede unicode, tat comes from feedparser

[yma-het]

Hi! FeedNotifier is a good application, but i can't read twitter with it. The easyest way to read twitter, if you does not have account is this: https://twitrss.me/twitter_user_to_rss/?user= script. But this script returns HTML encoded strings. In this commit i've handled this situation, so now FeedNotifier becomes more powerfull)

[noxiouz]

Such a cool feature!