Enable use of vue cli 3.0 beta 11

[elevatebart]

Had to do a couple of fixes to the make-webpack-config.js as it was conflicting with the use of the preloaders vue cli uses.
Made sure that webpack loads the dev compiler and not the runtime one.
Added the resolving of the mystic @vue/cli-service/webpack.config.js and an example.

[elevatebart]

I could not manage to run unit tests locally so did not try unit testing my changes.
I did all my tests manually.

[rafaesc]

Thanks for PR,

I had to change some files and removing the plugins of vue-cli webpack because it generated errors in console.

f83faf2

I will release a new version of vue-styleguidist with this feature soon.