connect to sqlite with isolation_level=None as an attempt to avoid (invalid) database is locked errors

Module.py

@@ -174,7 +174,7 @@ class Module(object):
         """
 
         dbfile = self.config.get('dr.botzo', 'database')
-        conn = sqlite3.connect(dbfile)
+        conn = sqlite3.connect(dbfile, isolation_level=None)
         conn.row_factory = sqlite3.Row
 
         # setup regexp function in sqlite

dr.botzo.py

@@ -60,7 +60,7 @@ try:
     # make sure we can initialize the database, if such a thing is
     # called for in the config file
     dbfile = config.get('dr.botzo', 'database')
-    conn = sqlite3.connect(dbfile)
+    conn = sqlite3.connect(dbfile, isolation_level=None)
     try:
         query = """
         SELECT COUNT(*)