Use new Sockethub IRC connect flow, show connect errors

[raucao]

Implements and relies on sockethub/sockethub#671

closes #194

[raucao]

@silverbucket For some reason, the yarn build is failing with Sockethub master on Travis CI now:

The command "yarn run build" failed and exited with 127 during .

https://app.travis-ci.com/github/67P/hyperchannel/builds/245985117

[raucao]

I have found the CI build problem. For some reason, the standard yarn install in sockethub's root package.json does not run the lerna bootstrap/install anymore. I changed it to the new npm script, but I think this is less clean and intuitive than a standard yarn install && yarn start.

[silverbucket]

@raucao yeah, unfortunately this is a limitation of lerna when there is a package.json in the root of the repository (in additon to each packages package.json). I created an issue here explaining it lerna/lerna#3070, in the meantime we're going to have to use yarn run deps as the one-step command to install all dependencies.

[silverbucket]

LGTM