update publications, insert clickable reference for software

a) enhance publications list and

b) put a clickable headline for software publications at the top so visitors will see this section as imho no one scrolls down to the end of the publications to look for another section

closes !560 (merged)

view here

edit here

publications.md

@@ -12,7 +12,7 @@ excerpt:
 <h3>see also the <a href="#software">Software Publications</a></h3>
 
 
-# Publications, Presentations, News
+# Publications, Presentations, Selected Blog Posts
 
 ##### 2022