Added "source" button for template debugging

plugs/markdown/assets/markdown_widget.css

@@ -46,7 +46,7 @@ body:active #button-bar {
 }
 
 .cm-editor {
-  padding-left: 10px;
+    padding-left: 10px;
 }
 
 #button-bar button {
@@ -56,7 +56,8 @@ body:active #button-bar {
     color: var(--root-color);
 }
 
-#edit-button {
+#edit-button,
+#source-button {
     margin-left: -10px;
 }
 
@@ -68,4 +69,4 @@ li code {
 iframe {
     border: none;
     width: 100%;
-}
+}

plugs/markdown/assets/markdown_widget.js

@@ -6,6 +6,9 @@ async function init() {
   document.getElementById("reload-button").addEventListener("click", () => {
     api({ type: "reload" });
   });
+  document.getElementById("source-button").addEventListener("click", () => {
+    document.getElementById("body-content").innerText = originalMarkdown;
+  });
 
   document.querySelectorAll("a[data-ref]").forEach((el) => {
     el.addEventListener("click", (e) => {