Update tailwindcss v2.0.3 JIT compiler

[macCesar]

• update every dependency to the latest versions.
• added npm run watch to test JIT compiler.
• Fixed dark/light mode to v2.0.3
• Fixed forms.html to use the latest @tailwindcss/forms
• Added more examples to 'forms.html`

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[macCesar]

Hello Estevan can you review this PR please??

Thanks!!

[ramaID]

love it, thanks!

[macCesar]

I'm still checking other sections. But so far everything looks great!!

I hope that Estevan can soon merge this PR.

[macCesar]

Refactor every HTML pages to use a primary color.

To easily update the overall color theme from within tailwind.config.js

...
module.exports = {
  ...
  theme: {
    ...
    extend: {
      colors: {
        primary: colors.purple,
       ...
      },
      ...
    },
  },
  ...
}