Modularize code;

Add packaging instructions;
Add modules to handle Gemini file type (no Gemini server yet);
Improve handling of configuration.

assets/script/iso8601_to_utc.js

@@ -0,0 +1,8 @@
+// Convert ISO8601 To UTC
+
+window.onload = function(){
+  for (element of document.querySelectorAll('#articles > ul > li > div > h4')) {
+    timestamp = new Date(element.textContent);
+    element.textContent = timestamp.toUTCString();
+  }
+}