Added event content stubs for poll event types
Currently if an iOS client has poll events in its timeline, it will show as a failure to decrypt error. I have created content stubs for poll event types until proper support is added in circles-ios#4.
Currently if an iOS client has poll events in its timeline, it will show as a failure to decrypt error. I have created content stubs for poll event types until proper support is added in circles-ios#4.