Fix CSP violations and revert to stable CSS version

- Add region1.google-analytics.com to CSP headers in index.php and blog articles
- Fix manifest.json icon purpose warning by changing to "any"
- Add mobile-web-app-capable meta tag for mobile compatibility
- Revert CSS files to stable version from commit 5558f53 to resolve hero section animation issues
- Remove spam protection code that was causing layout problems

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.msmtprc

@@ -0,0 +1,12 @@
+# msmtp configuration for sending emails
+account default
+host smtp.gmail.com
+port 587
+auth on
+user info@ukdataservices.co.uk
+password YOUR_APP_PASSWORD_HERE
+from info@ukdataservices.co.uk
+tls on
+tls_starttls on
+tls_certcheck off
+logfile /var/www/html/logs/msmtp.log