♻️(project) rename project from "publish" to "impress"

The repository was renamed to "impress" but the code was still
mentionning "publish".

src/backend/setup.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-"""Setup file for the publish module. All configuration stands in the setup.cfg file."""
+"""Setup file for the impress module. All configuration stands in the setup.cfg file."""
 # coding: utf-8
 
 from setuptools import setup