Also changes the namespace separator key from ":" to "|" to avoid
parsing issues from i18next.

If we are not using the locales (because they're incomplete), let's not
ship them at all.

This commit adds i18next-parser and a few convenience commands in order
to generate/create the translation files for the existing locales.

For creating a new locale, create the locale directory under
frontend/src/i18n/locales and run `make i18n`.

Change cluster modal to focus first cluster button

Fix editor, which was breaking after typing

Humble a11y fixes

By request: https://github.com/kinvolk/headlamp/pull/244#issuecomment-852075724

docs: Add EKS to the list of tested platforms that work

As reported in https://github.com/kinvolk/headlamp/issues/266 , let's add EKS as "works".

The Editor before could trap focus, meaning tab would not escape
the editor. So we give the option to use a simple textarea
based editor.

Sets the page title for different routes.

So screen readers can skip past the navigation and stuff easily.

It needs to have an element existing in the DOM.