use 'e' to edit only if accessed via file://

assets/js/sandpoints.js

@@ -67,7 +67,7 @@ function editPage(repoJsId) {
 ev}
 
 window.addEventListener("keyup", (e)=> {
-  if (e.key == "e") {
+  if (e.key == "e" && location.protocol == "file:") {
     editPage(sandpointsPageId)
   }
 })