Fix dependencies
Refactor notifications into a wrapper class
Refactor all calls to notification methods
Move calls to notifications on ws endpoints to models (except conversation creation)
Raise 503 when rabbitmq not available on starting max
Simplify custom exception classes
Conditional rabbitmq tests boilerplate
Provide a way to run code from other tests
Complete rabbitmq tests for conversations
Adapt current tests used in rabbitmq tests
Notifications based on a literal instead of bool
Tests on contexts with notifications
Fix method name
Finish rabbitmq tests
PEP8
Deepcopy mock message that was being overwritten
notify comments on specified contexts