Update changelog

Fix reverse lookup of search view

Merge branch 'fix-login'

* fix-login:
  Fix url shortening, use requests instead of urllib2
  Add back twitter info placeholder in settings
  Add link to re-link accounts form
  Remove Stack Exchange login
  Show related User social auth
  Order users by oneliner count, descending
  Give all urls names
  Remove comments
  Remove question
  Upgrade to Django 1.11
  Replace __unicode__ with __str__

Merge branch 'social-auth'

* social-auth: (23 commits)
  front page works again
  re-enabled django social auth
  updated todo
  confirmed github oauth works
  confirmed stackexchange oauth works
  cosmetic: reordered auth backends in order of appearance
  added twitter login
  cleaned up login page
  confirmed google oauth works
  confirmed generic openid auth works
  auth with launchpad works
  auth with yahoo works
  auth with twitter works
  works with django 1.9, but had to take down comments, and disable feeds too
  updated settings to follow django 1.9
  upgrade to django 1.9 in progress
  login with python-social-auth in progress
  new dep: python-social-auth, no more django-social-auth
  revised text on source code page, dropped bzr support
  revised todo
  ...

updated release notes

added favicon. ugly, but better than nothing