fix hard coded vote url

reminder.py

@@ -36,7 +36,7 @@ for vote in c.execute('select id, id_group, date_end, title from votes where is_
             print userchoice
             if userchoice is None:
                 #user didn't vote yet
-                link = "http://vote.ffdn.org/vote/%d" % vote[0]
+                link = VOTE_URL % vote[0]
                 BODY = string.join((
                     "From: %s" % EMAIL,
                     "To: %s" % user[1],
@@ -60,7 +60,7 @@ for vote in c.execute('select id, id_group, date_end, title from votes where is_
                 server.sendmail(EMAIL, user[1], BODY.encode('utf-8'))
                 server.quit()
             else:
-                link = "http://vote.ffdn.org/vote/%d" % vote[0]
+                link = VOTE_URL % vote[0]
                 BODY = string.join((
                     "From: %s" % EMAIL,
                     "To: %s" % user[1],