Ignore PEP8 E265

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>
Fix E714 test for object identity should be 'is not'

Signed-off-by: Thanh Ha <thanh.ha@alumni.carleton.ca>
added notification_manager file and modified record file
fixed some bugs, to do: add frontend functions
modified notification_manager, added frontend methods
modified add and delete methods on framework side