Update to webpack 3.*, bump relevant dependencies (fix #751)

[LinusBorg]

This PR updates all webpack-related dependencies to their latest versions.

It also deactivates the code responisble for triggering page reload when html-webpack-plugin sees that index.html has been changed, because according to jantimon/html-webpack-plugin#680 this is currently buggy and interferes with HMR.

Commenting out this code makes HMR work again.

We will keep an eye on this issue and re-enable this once the problem in html-webpak-plugin has been resolved.

[robwierzbowski]

I just updated to Webpack 3 on a project scaffolded using this repo. My diffs were:

Update to Webpack 3.5.5: https://github.com/robwierzbowski/rw-vue/commit/d6787debfcd8738ad6bcced81ada5ce5a0caf7eb
Fix the resulting Uglify issue: https://github.com/robwierzbowski/rw-vue/commit/09f58c3790a168faefdc0f86af492cb6a473553f

More changes than your current diff, just wanted to let you know.

[LinusBorg]

Thanks, will check that out!

Much apprechiated.

[robwierzbowski]

No problem.

[maxmilton]

Since we're making the step to webpack 3 should we also now use webpack.optimize.ModuleConcatenationPlugin()? Or perhaps that should be a separate PR?

[Finrod927]

Using these versions and this fix for few weeks now, no issues.
Just need a manual fresh "page reload" sometimes, I don't know why, it's probably related to my project.

[sudo-suhas]

@LinusBorg I upgraded a project to webpack 3 and while it isn't a through check, things were working as expected. Hot-reloading too for src code.