updated: webpack and webpack dev server to latest version

[maartentibau]

Just look closely at the title 😄

[frederikprijck]

Is there a reason why you edited all versions ?

[maartentibau]

@frederikprijck .. well I asked @juristr if he would mind if I removed the ^ character, since in my experience it causes more problems than it solved, certainly when working with webpack.

If you perform a npm update sometimes your setup might just not work anymore and if you have a few loaders working, you need to go through each one separatly.

[frederikprijck]

Afaik shrinkwrap can be used for this: https://docs.npmjs.com/cli/shrinkwrap