All "development" related stuff now goes under ./dev

- Update dev-config.env
- Update docker-compose.dev.yml
- Development target of Dockerfile no longer creates any folders
- Update entry point scripts

.gitignore

@@ -61,4 +61,7 @@ secret_key.txt
 
 # Coverage reports
 .coverage
-htmlcov/
+htmlcov/
+
+# Development files
+.dev/