Cws 1256 reset app timer

[csmith14]

Sends a message with timeout fields, using specific message text, which is filtered and ignored by LiveChat. This enables reset of both app and widget timers when user types.

This also addresses the bug described in WideChat/Rocket.Chat#1305 by checking for widget control before handling a timeout message from the LiveChat widget.

[ear-dev]

@bhardwajaditya can you review please?

[ear-dev]

@csmith14 can you fix the conflicts please? thanks.

[ear-dev]

@csmith14 I've tested this and it looks pretty good. A couple of issues I'm seeing:

• If the visitor starts typing in the composer, but does not send, then the chat will never timeout. Is there a way to protect against that?
• I've got the sound enabled on my widget, so the chime rings every time a message comes through. That's default RC behavior I think. However, I'm getting a lot of extra chimes when there is no visible message. I suspect that is the control messsages you are sending? Is there a way to disable the chime for those messages?

[Shailesh351]

@csmith14 @ear-dev We should try to avoid using messages as the control mechanism for these typing events if possible. Because considering the frequency of these typing messages(~ every 3sec) it will just increase the DB size unnecessarily. And there will be unexpected issues like the one @ear-dev mentioned, notification sound.

Also, it will affect analytics(no of messages).