Update heartbeat function location and name

Server/public/res/js/controller.js

@@ -1,3 +0,0 @@
-function sendNodeHeartbeat(nodeId) {
-    console.log(nodeId);
-}

Server/public/res/js/node.js

@@ -80,7 +80,7 @@ function createToast(notificationMessage){
     $('.toast').toast('show');
 }
 
-function checkInByNodeId(nodeId){
+function sendNodeHeartbeat(nodeId){
     const Http = new XMLHttpRequest();
     const url='/nodes/'+nodeId;
     Http.open("GET", url);