Include posters in Twitter notifications

* Also cleanup Facebook

lib/requests_oauthlib/compliance_fixes/mailchimp.py

@@ -0,0 +1,22 @@
+import json
+
+from oauthlib.common import to_unicode
+
+def mailchimp_compliance_fix(session):
+    def _null_scope(r):
+        token = json.loads(r.text)
+        if 'scope' in token and token['scope'] is None:
+            token.pop('scope')
+        r._content = to_unicode(json.dumps(token)).encode('utf-8')
+        return r
+
+    def _non_zero_expiration(r):
+        token = json.loads(r.text)
+        if 'expires_in' in token and token['expires_in'] == 0:
+            token['expires_in'] = 3600
+        r._content = to_unicode(json.dumps(token)).encode('utf-8')
+        return r
+
+    session.register_compliance_hook('access_token_response', _null_scope)
+    session.register_compliance_hook('access_token_response', _non_zero_expiration)
+    return session