Improve uWSGI config

deploy/uwsgi.ini

@@ -1,5 +1,6 @@
 [uwsgi]
 strict = true  # Fail if unknown config parameter found.
+need-app = true   # Fail to start if application cannot load
 plugins = python3
 chdir = {{ project_dir }}
 home = {{ virtualenv }}
@@ -10,9 +11,10 @@ processes = 3
 harakiri = 30
 max-requests = 5000
 vacuum = true
+procname-prefix-spaced = {{ site_name }}
 # For Sentry, see https://docs.sentry.io/clients/python/advanced/#a-note-on-uwsgi.
 enable-threads = true
-log-prefix = {{ site_name }}
+log-encoder = format {{ site_name }} ${msgnl}
 
 # Enable uWSGI stats server for use with uwsgitop.
 # Run with: `sudo -u www-data uwsgitop /run/{{ site_name }}/django_uwsgi_stats.socket`