Fix runtime errors in cache sync

mutalyzer/entrypoints/admin.py

@@ -294,6 +294,7 @@ def main():
         '-H', '--history', metavar='DAYS', dest='history', type=int,
         default=7, help='number of days to go back in the remote cache '
         '(default: 7)')
+    p.set_defaults(func=sync_cache)
 
     # Subparser 'setup-database'.
     p = subparsers.add_parser(

mutalyzer/sync.py

@@ -5,10 +5,12 @@ Module for synchronizing the database with other Mutalyzer instances.
 
 from mutalyzer.util import monkey_patch_suds; monkey_patch_suds()
 
+from datetime import datetime, timedelta
 import os
 import re
-from datetime import datetime, timedelta
 import urllib2
+
+from sqlalchemy.orm.exc import NoResultFound
 from suds.client import Client
 
 from mutalyzer.config import settings