Add new node if node tries to check in with an ID not in the DB

Server/controllers/nodesController.js

@@ -269,6 +269,7 @@ exports.updateExistingNode = async = (req, res) => {
 exports.nodeCheckIn = async (req, res) => {
     if (!req.params.nodeId) return res.status(400).json("No id specified");
         getNodeInfoFromId(req.params.nodeId, (nodeInfo) => {
+            if (!nodeInfo) return this.newNode(req, res);
             if (!nodeInfo.online) {
                 nodeInfo.online = true;
                 updateNodeInfo(nodeInfo, () => {