Improvement to usage of webfonts in frontend
Add preconnect to frontend for SourceSansPro
https://www.cdnplanet.com/blog/faster-google-webfonts-preconnect/
Add preload to frontend for Zanata.woff (icon font)
https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/webfont-optimization#preload_your_webfont_resources