Made more elegant solution to tools URLs

Frontend/assets/scripts/frame.js

@@ -32,7 +32,7 @@ function init() {
     changeActiveTools('XML');
     var toolUrl = window.location.search.substring(1);
     if (tools.has(toolUrl))
-        changeTool(toolUrl);
+        changeTool(toolUrl, false);
     else
         loadLastPage();
     
@@ -73,19 +73,23 @@ function changeActiveTools(activeCategoryButton) {
     }
 }
 
+
 /**
- * Function that changes active tool
+ * This function changes active tool.
+ * Optional updateURL can be set to false to stop changing URL. 
+ * This helps avoiding endless reload loop when loading page.
  * 
  * @function
  * @name changeTool
  * @kind function
  * @param {any} tool
+ * @param {boolean} updateURL?
  * @returns {void}
  */
-function changeTool(tool) {
+function changeTool(tool, updateURL = true) {
     if (tools.has(tool)) {
         const url = tools.get(tool);
-        document.location.search = tool + "/";
+        if (updateURL) document.location.search = tool;
         localStorage.setItem("lastPage", tool);
         document.getElementById("iframe").src = url;
     }