Update config for isort 5.0

setup.cfg

@@ -4,14 +4,7 @@ exclude = .git, *.pyc, __pycache__, migrations
 extend-ignore = E231, E203
 
 [isort]
-# For black compat: https://github.com/ambv/black#how-black-wraps-lines
-combine_as_imports = true
-default_section = THIRDPARTY
-force_grid_wrap = 0
-include_trailing_comma = true
+profile = black
 known_django = django
-known_first_party = degette,sitedg
-line_length = 88
-multi_line_output = 3
-not_skip = __init__.py
+known_first_party = elections, shared
 sections = FUTURE,STDLIB,THIRDPARTY,DJANGO,FIRSTPARTY,LOCALFOLDER