Enable login

Frontend is now able to POST to user login endpoint and receive a JWT
token and some user details. These are stored in localStorage.

Author: LimZiJia

docker-compose.yml

@@ -55,7 +55,7 @@ services:
       context: services/user
       dockerfile: Dockerfile
     ports:
-      - 3001
+      - 3001:3001
     environment:
       USER_SERVICE_CLOUD_URI: ${USER_SERVICE_CLOUD_URI}
       USER_SERVICE_LOCAL_URI: ${USER_SERVICE_LOCAL_URI}