exampleSite: Fix deprecation warnings

Adds Spanish i18n (#97)

* Adds Spanish i18n

* whitespace patch

Run hugo mod get -u ./...

Make the top search listing clickable

This is probably how it always have worked, but the main search listing looks like somethig that
should be clicked on.

Alpine Alpine 3.10.2

Simplify exampleSite setup

Use a replace directive in exampleSite/go.mod to point to the directory above instead of the themesDir workaround it replaces. This should make it more robust and be the same setup as people using this theme for real projects.

netlify: Bump to Hugo 0.91.1

Also remove the usage of getenv in the example site.

Add x-cloak to body to prevent flicker on load

Fix language filter on load

Fixes #74

Remove unused JS code