added atomic commiting to processing comic books to increase performance.

comic/views.py

@@ -3,8 +3,6 @@ from django.template import RequestContext
 from django.utils.http import urlsafe_base64_decode
 from django.shortcuts import render, redirect, get_object_or_404
 from django.contrib.auth.decorators import login_required, user_passes_test
-from django.core.validators import validate_email
-from django.core.exceptions import ValidationError
 from django.contrib.auth.models import User
 
 from comic.models import Setting, ComicBook, ComicStatus
@@ -215,4 +213,4 @@ def get_image(_, comic_path, page):
 
 
 def comic_redirect(_):
-    return redirect('/comic/')
+    return redirect('/comic/')