add main power off notification

apps/notificationsmanager.py

@@ -3,7 +3,7 @@ import appdaemon.exceptions as ad_exception
 import ad_toolbox.smartcondition as SmartCondition
 import re
 import uuid
-from expressionparser import ParsingException
+from ad_toolbox.expressionparser import ParsingException
 
 class Notification:
     ENTITY_PLACEHOLDER_PATTERN = re.compile(r"\{([^{}]+)\}")