remember login state, and check if user is logged in on page

src/website/CheckLoginState.java

@@ -0,0 +1,22 @@
+package website;
+
+import java.util.HashMap;
+
+public class CheckLoginState extends PostRequest {
+    @Override
+    public String request(HashMap<String, String> params) {
+        System.out.println("checkin login state");
+        if ((params.get("action")).equals("getloginstate")){
+            if (LoginState.getObject().isLoggedIn()){
+                return "{\"loggedin\":true, \"username\":\""+LoginState.getObject().getUsername()+"\"}";
+            }else {
+                return "{\"loggedin\":false}";
+            }
+        }else if ((params.get("action")).equals("logout")){
+            System.out.println("logging out");
+            LoginState.getObject().logOut();
+            return "{\"loggedin\":false}";
+        }
+        return "{\"loggedin\":false}";
+    }
+}