Replace praise-* class names with React components

[kristoferlund]

@pkretzschmar, this is part of a larger refactor of the frontend. Replacing css classes with React components is in many cases a good idea, for example:

Instead of css/Tailwind classes:

praise-button
praise-button-outline

Create React components:

<Button/>
<Button outline/>

praise-box and praise-page can also be refactored.

See Tailwind tips here: https://tailwindcss.com/docs/reusing-styles#extracting-components-and-partials

Another refactor is: encapsulating common patterns in more generic React components. Dialog from '@headlessui/react' for example is used in some places but used slightly different each time.

What other components could be made generic?

Pinging @nebs-dev @mattyg and @Vyvy-vi as well.