Make IDs for chat messages generated server-side, not client. For #26

webroot/js/utils.js

@@ -35,13 +35,6 @@ function jumpToBottom(element) {
   }, 50, element);
 }
 
-function uuidv4() {
-  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
-    const r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
-    return v.toString(16);
-  });
-}
-
 // convert newlines to <br>s
 function addNewlines(str) {
   return str.replace(/(?:\r\n|\r|\n)/g, '<br />');