Add any blog feed to the Homepage

Please allow us to add any blog or other RSS feed to the Homepage. See UserVoice suggestions: https://logos.uservoice.com/forums/42823-logos-bible-software-8/suggestions/6667675-allow-custom-blogs-and-rss-feeds-on-the-home-page and https://logos.uservoice.com/forums/42823-logos-bible-software-8/suggestions/1123627-built-in-rss-reader.