[books] Fix bad import after moving webdav to importers

vrobbler/apps/scrobbles/importers/webdav.py

@@ -1,9 +1,11 @@
+import logging
+
 from books.koreader import fetch_file_from_webdav
 from profiles.models import UserProfile
 from scrobbles.models import KoReaderImport
 from scrobbles.tasks import process_koreader_import
+from scrobbles.utils import get_file_md5_hash
 from webdav.client import get_webdav_client
-import logging
 
 logger = logging.getLogger(__name__)
 
@@ -11,7 +13,7 @@ logger = logging.getLogger(__name__)
 def import_from_webdav_for_all_users(restart=False):
     """Grab a list of all users with WebDAV enabled and kickoff imports for them"""
 
-    # LastFmImport = apps.get_model("scrobbles", "LastFMImport")
+    # WebDavImport = apps.get_model("scrobbles", "WebDavImport")
     webdav_enabled_user_ids = UserProfile.objects.filter(
         webdav_url__isnull=False,
         webdav_user__isnull=False,