[bug] Sometimes command response is not shown

[nemesifier]

When sending commands, in some cases the response is not shown.
This happens when there's already some recent commands in the UI and the UI relies on the websocket communication.

@pandafy please help me to replicate and fix this bug, I suspect the initial websocket connection can fail to establish, if this is the cause, we can change the code to retry to establish the connection until it works.

[pandafy]

In my testing, I found that this issue appears on slow internet connection.

Steps to replicate:

1. Open change page for any device
2. Open web debugger tools, and set network throttling to slow 3G
3. Refresh the page
4. Filter the websocket connections

You will see that the websocket connection is not getting established.

I believe the culprit is the tiimeoutInterval setting of ReconnectingWebSocket.

Updating the timeoutInterval to 5000 fixed the issue locally.