Twitter redirects http://twitter* to https://twitter*, use by default

[John Drinkwater]

Noticed this issue when clearing out my browser history, each tweet I have visited from Polly is being stored twice because its opened as (for example) http://twitter.com/mikeBithell/status/393703191730077696 then twitter redirects to https://twitter.com/mikeBithell/status/393703191730077696

Would be better, by default, to forward the user to https:// in show_url in these files:

gui/twitter/lead/user/__init__.py: show_url(u'http://twitter.com/{}'.format(self.user_nick))
gui/twitter/lead/group/__init__.py: show_url(u'http://twitter.com/{}/{}'.format(self.user_nick, self.group_nick))
gui/twitter/post/tweet.py: show_url(u'http://twitter.com/{}/status/{}'.format(self.user_nick, self.tweet_id))
gui/twitter/post/result.py: show_url(u'http://twitter.com/{}/status/{}'.format(self.header.get_text(), self.real_id))

It also removes a pause for a redirect so loads the site quicker…