Optimize a static nuxtjs site

Lets see how much we can optimize a nuxt.js setup.

• Disable unused features.

https://github.com/nuxt/nuxt.js/pull/6468/commits/174c13d56c3a1a227950a59e5c93d1826fa10af1#diff-b79f9948571848990127074d0e85abf88aa99ced4085a08db56f072af0e398c7R8-R23

• NeverHydrate component

• Purge css with tailwind