better handling of incoming events and messages for ussd type
better handling of incoming events and messages for ussd type

tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web