Fixes #100. Creates |twitterize filter, which incorporates urlize. Added use of this filter to tweets.html, home.html and twitter_user.html pages
PEP8 fixes
moved imports to top, changed twitter links to https, refs #100
Merge pull request #104 from gwu-libraries/t100-twitterify-tweets

Fixes #100. Creates |twitterize filter, which incorporates urlize. Added...