Add happychat client npm package to mobile chat page

[unDemian]

Built on top of #23842

Summary

This PR uses the in-development happychat-client npm package to replace the happychat entry point used for mobile user at the route me/chat

This will not be merged until we publish the npm package

Testing

0. Make sure you use the same npm version for both projects
1. Switch happychat-client branch to add/layout-option Add layout option happychat-client#196
2. npm link in happychat-client
3. npm link happychat-client in calypso
4. Run npm run dev:npm in happychat-client and leave it running
5. Start calypso
6. Access /me/chat chat should be loaded and it should work properly

[matticbot]

Test live: https://calypso.live/?branch=add/happychat-client-to-mobile

[kwight]

For those testing, it looks like happychat-client needs Node 6.11.5, while Calypso needs Node 8.11.0 to get everything to start. You don't need the happychat repo or Redis running at all.

Following the instructions, I have a chat interface of sorts showing up in /me/chat, with some content from previous testing, but I'm not sure what to expect of the interface (mine is all unstyled):

[unDemian]

Thanks for taking the time.

Following the instructions, I have a chat interface of sorts showing up in /me/chat, with some content from previous testing, but I'm not sure what to expect of the interface (mine is all unstyled):

The styles are served by the happychat-client development process, in order to have it working you should run npm run dev:npm (step 4 in description) in the happychat-client and let it running so the http server that serves the styles is running. I updated the description to include that.

[alisterscott]

Is this still required?

[unDemian]

Sorry for the late response, I was afk, the Happychat Client Calypso integration was put on hold as our team has other high priority work scheduled. We will most likely come back to this after the GM. So let's keep the PRs around. Thanks

[alisterscott]

Closing due to inactivity. Please reopen if necessary.