Meta: Some late spring cleaning

It was annoying me for a while now that my chosen theme PaperMod didn&rsquo;t also support some kind of all-in-one RSS feed with all main sections. And also that the feeds were called index.xml instead of feed.xml , confusing me every time I wanted to check something on them manually. Also, the feed link title just being rss didn&rsquo;t exactly help in a feed reader either. So just now I&rsquo;ve…