Revert "Removes the news button from the start page"

Author: LinqLover

index.html

@@ -18,6 +18,9 @@
 release_notes_link: https://raw.githubusercontent.com/squeak-smalltalk/squeak-app/squeak-trunk/release-notes/6.0
 
 sub_button_group:
+  - title:  News
+    href:   https://news.squeak.org/
+    icon:   newspaper-o
 
   - title:  Engage
     href:   https://lists.squeakfoundation.org/mailman3/lists/squeak-dev.lists.squeakfoundation.org/