config: add wiki links

main wiki link included with "about" and "user profiles". Sections with
a relevant page have a linked button next to their title when clicked.
Behaviour added by the "wiki_link" field in the "meta" section of a
config "section".

package.json

@@ -31,7 +31,7 @@
     "nightwind": "^1.1.13",
     "perl-regex": "^1.0.4",
     "postcss": "^8.4.24",
-    "remixicon": "^3.3.0",
+    "remixicon": "^4.3.0",
     "remove-markdown": "^0.5.0",
     "tailwindcss": "^3.3.2",
     "typescript": "^5.1.3",