old_contents: from django.shortcuts import render_to_response, get_object_or_404
  from django.http import HttpResponseRedirect, Http404
  from django.template import RequestContext
  from django.db import IntegrityError
  from django.db.models import Q
  from django.core.urlresolvers import reverse
  from django.utils.translation import ugettext_lazy as _
  from django.contrib.auth.models import User
  from django.contrib.auth.decorators import login_required
  from django.views.generic import date_based
  from django.conf import settings
  from activity_stream.models import ActivityFollower, create_activity_item, ActivityStreamItem
  from blog.models import Post,PostImage
  from blog.forms import BlogForm, BlogImageForm
  
  import datetime
  try:
      from notification import models as notification
  except ImportError:
      notification = None
  
  def activity_stream_item(request, username, id, template_name="activity_stream/activity_item.html"):
      user = get_object_or_404(User, username=username)
      activity_item = get_object_or_404(ActivityStreamItem, pk=id)
      return render_to_response(template_name, {
          "activity_item": activity_item,
          "viewed_user": user,
      }, context_instance=RequestContext(request))
  
  @login_required
  def start_follow(request, username, success_url=None):
      user = get_object_or_404(User, username=username)
      follower = ActivityFollower(to_user=user, from_user=request.user)
      follower.save()
  
      create_activity_item("started_following", request.user, user)
  
      if not success_url:
          success_url = request.META.get('HTTP_REFERER','/')
         
      if notification:
          notification.send([user], "new_follower", {"follower": request.user})
          
      return HttpResponseRedirect(success_url)
  
  @login_required
  def end_follow(request, username, success_url=None):
      user = get_object_or_404(User, username=username)
      follower = ActivityFollower.objects.get(to_user=user, from_user=request.user)
      follower.delete()
      if not success_url:
          success_url = reverse("activity_stream", args=(user.username,))
      return HttpResponseRedirect(success_url)
      
  @login_required
  def like(request, id):
      subject = get_object_or_404(ActivityStreamItem, pk=id)
      create_activity_item("likes", request.user, subject)
      return HttpResponseRedirect(request.META.get('HTTP_REFERER','/'))
  
  
  def activity_stream(request, username, template_name="activity_stream/activity_stream.html"):
      user = get_object_or_404(User, username=username)
      return render_to_response(template_name, {
          "viewed_user": user,
      }, context_instance=RequestContext(request))
  
  
new_contents: from django.shortcuts import render_to_response, get_object_or_404
  from django.http import HttpResponseRedirect, Http404
  from django.template import RequestContext
  from django.db import IntegrityError
  from django.db.models import Q
  from django.core.urlresolvers import reverse
  from django.utils.translation import ugettext_lazy as _
  from django.contrib.auth.models import User
  from django.contrib.auth.decorators import login_required
  from django.views.generic import date_based
  from django.conf import settings
  from activity_stream.models import ActivityFollower, create_activity_item, ActivityStreamItem
  
  import datetime
  try:
      from notification import models as notification
  except ImportError:
      notification = None
  
  def activity_stream_item(request, username, id, template_name="activity_stream/activity_item.html"):
      user = get_object_or_404(User, username=username)
      activity_item = get_object_or_404(ActivityStreamItem, pk=id)
      return render_to_response(template_name, {
          "activity_item": activity_item,
          "viewed_user": user,
      }, context_instance=RequestContext(request))
  
  @login_required
  def start_follow(request, username, success_url=None):
      user = get_object_or_404(User, username=username)
      follower = ActivityFollower(to_user=user, from_user=request.user)
      follower.save()
  
      create_activity_item("started_following", request.user, user)
  
      if not success_url:
          success_url = request.META.get('HTTP_REFERER','/')
         
      if notification:
          notification.send([user], "new_follower", {"follower": request.user})
          
      return HttpResponseRedirect(success_url)
  
  @login_required
  def end_follow(request, username, success_url=None):
      user = get_object_or_404(User, username=username)
      follower = ActivityFollower.objects.get(to_user=user, from_user=request.user)
      follower.delete()
      if not success_url:
          success_url = reverse("activity_stream", args=(user.username,))
      return HttpResponseRedirect(success_url)
      
  @login_required
  def like(request, id):
      subject = get_object_or_404(ActivityStreamItem, pk=id)
      create_activity_item("likes", request.user, subject)
      return HttpResponseRedirect(request.META.get('HTTP_REFERER','/'))
  
  
  def activity_stream(request, username, template_name="activity_stream/activity_stream.html"):
      user = get_object_or_404(User, username=username)
      return render_to_response(template_name, {
          "viewed_user": user,
      }, context_instance=RequestContext(request))
  
  
subject: Remove unused references to blog app classes