Merge branch '320-maj-gitlab-ci-to-start-on-fresh-install' into 'django'

Removing .env and data files before launching bootstrap.

Closes #320

See merge request !174

.gitlab-ci.yml

@@ -14,7 +14,10 @@ bootstrap:
   tags:
     - allgo
   stage: build
-  script: "./bootstrap"
+  script:
+    - rm -f .env
+    - sudo rm -rf data/*
+    - ./bootstrap
 
 django_pylint:
   stage: test