fix import and checking ratelimit in routes

luser/routes.py

@@ -1,6 +1,7 @@
 from flask import render_template, request, redirect
 from luser import app
 from luser.models import LUSER
+from luser.models import ratelimit
 from passlib.hash import ldap_salted_sha1,sha512_crypt
 import subprocess
 import random
@@ -88,7 +89,7 @@ def unregister():
 @app.route('/account/register/', methods=['POST', 'GET'])
 def register():
     rl = ratelimit(PERIOD, LIMIT, "/var/luser/luser/.ratelimit")
-    if rl.check(1):
+    if rl.check(1) == False:
         return 'Error: rate limit exceeded, please come again in ' + PERIOD
     if request.method == 'GET':
         captcha_solution = str(random.randint(0,999999))