fixed error messages

status.php

   $date = new DateTime($token["date"]);
   $date->add(new DateInterval("P1D"));
   if ($token === false || $date < new DateTime())
-    error(401, "Invalid token");
+    error(401, "Invalid user token");
   return $token["token"];
 }
 
   $token = check_token();
   $status = get_post("status");
   if (strlen($status) < 10)
-    error(422, "Status too short");
+    error(422, "Status length too short");
 
   $lat = check_float(get_post("latitude", false));
   $long = check_float(get_post("longitude", false));

user.php

     error(422, "Username too short");
   if (database_exec("SELECT id FROM users WHERE `username` = :username",
     array(":username" => $username))->fetch() !== false)
-    error(409, "Username already exists");
+    error(409, "Username already taken");
   database_exec("INSERT INTO users (`username`, `password`) ".
     "VALUES(:username, :password)", array(":username" => $username,
       ":password" => hash_password($password)));
     $args = array(":username" => $username);
   $u = database_exec($query, $args)->fetch();
   if ($u === false)
-    error(401, "Wrong username or password");
+    error(401, "Bad credentials");
   $token = hash_password(uniqid(mt_rand(), true));
   database_exec("INSERT INTO tokens (`token`, `user`) VALUES (:token, :user)",
     array(":token" => $token, ":user" => $u['id']));