Simplify i18n and API refactore
Changes (breaking):
- refactor(i18n): add simple API instead of use vue-i18n, (775f336) read more https://typo3-initiatives.github.io/nuxt-typo3/frontend/i18n.html
- refactor(api): use nuxt-axios / add fallback for initialData on 404 (06adfe6)