Revert "Celery 4"

scripts/bootstrap.sh

@@ -20,7 +20,16 @@ function display_result {
   fi
 }
 
-make build
+if [ ! $VIRTUAL_ENV ]; then
+  virtualenv -p python3 ./venv
+  . ./venv/bin/activate
+fi
+
+# we need the version file to exist otherwise the app will blow up
+make generate-version-file
+
+# Install Python development dependencies
+pip3 install -r requirements_for_test.txt
 
 # Create Postgres databases
 createdb notification_api