import random
import sys
from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.core.urlresolvers import reverse
from django.db.models import Q
from django.http import Http404, HttpResponse, HttpResponseForbidden
from django.shortcuts import render, redirect, get_object_or_404
try:
from hashlib import sha1 as sha_constructor
except ImportError:
from django.utils.hashcompat import sha_constructor
from django.views import static
from django.contrib import messages
from django.contrib.auth.models import User
from django.contrib.auth.decorators import login_required
from account.models import EmailAddress
from symposion.proposals.models import ProposalBase, ProposalSection, ProposalKind
from symposion.proposals.models import SupportingDocument, AdditionalSpeaker
from symposion.speakers.models import Speaker
from symposion.utils.mail import send_email