Merge branch 'fix-environ-type' into 'master'

Fix a strange bug with runserver on Python 3.6.7+

See merge request !242

arkindex/project/settings.py

@@ -112,7 +112,7 @@ ARKINDEX_ENV = os.environ.get('ARKINDEX_ENV', 'dev')
 DEBUG = ARKINDEX_ENV == 'dev'
 
 # Run all system checks when starting the server
-ALL_CHECKS = bool(os.environ.get('ALL_CHECKS', False)) or 'runserver' in sys.argv
+ALL_CHECKS = os.environ.get('ALL_CHECKS') == 'true' or 'runserver' in sys.argv
 
 ALLOWED_HOSTS = env2list('ALLOWED_HOSTS', default=['localhost', ])
 

arkindex/project/wsgi.py

@@ -12,6 +12,6 @@ import os
 from django.core.wsgi import get_wsgi_application
 
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "arkindex.project.settings")
-os.environ['ALL_CHECKS'] = True
+os.environ['ALL_CHECKS'] = 'true'
 
 application = get_wsgi_application()