[deps] Switched to django-minify-compress-staticfiles #565

Replaced django-compress-staticfiles with the new
django-minify-compress-staticfiles package for static
file minification and compression.

The new package provides:
- CSS/JS minification using rjsmin and rcssmin
- Both Gzip and Brotli compression support
- Better security with path traversal protection
- Configurable compression levels and file size limits

Updated imports in storage.py and documentation
references accordingly.

Fixes #565

Author: SAMurai-16

tests/openwisp2/settings.py

@@ -139,4 +139,4 @@
 try:
     from local_settings import *  # noqa
 except ImportError:
-    pass
+    pass

tests/test_project/tests/test_admin.py

@@ -592,4 +592,4 @@ def _assert_system_information(response):
                 response = self.client.get(reverse("admin:ow-info"))
             self.assertEqual(response.status_code, 200)
             self.assertNotContains(response, "<h2>OpenWISP Version")
-            _assert_system_information(response)
+            _assert_system_information(response)

tests/test_project/tests/test_dashboard.py

@@ -293,4 +293,4 @@ def test_get_dashboard_context_html_escape(self):
         self.assertEqual(
             context["dashboard_charts"][1]["query_params"]["labels"][0],
             "<strong>Projects with operators</strong>",
-        )
+        )