Merge branch 'better-black-conf' into 'develop'

Unified black conf

See merge request funkwhale/funkwhale!675

.gitlab-ci.yml

@@ -114,7 +114,7 @@ black:
   before_script:
     - pip install black
   script:
-    - black --exclude "/(\.git|\.hg|\.mypy_cache|\.tox|\.venv|_build|buck-out|build|dist|migrations)/" --check --diff api/
+    - black --check --diff api/
 
 flake8:
   image: python:3.6

pyproject.toml

@@ -41,3 +41,6 @@
         directory = "misc"
         name = "Other"
         showcontent = true
+
+[tool.black]
+    exclude = "(.git|.hg|.mypy_cache|.tox|.venv|_build|buck-out|build|dist|migrations)"