Fix isort settings

Author: humitos

.isort.cfg

@@ -2,8 +2,8 @@
 line_length=80
 indent='    '
 multi_line_output=4
-default_section=FIRSTPARTY
-known_firstparty=readthedocs,readthedocsinc
-known_third_party=celery,stripe,requests,pytz,builtins,django,annoying,mock,allauth,oauthlib,requests_oauthlib,readthedocs_build
+default_section=THIRDPARTY
+known_first_party=readthedocs,readthedocsinc
+known_third_party=mock
 sections=FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER
 add_imports=from __future__ import division, from __future__ import print_function, from __future__ import unicode_literals