Refactor: correct the indentation of a bootstrap link in base.html

Chore: remove helpers module and all implementation regarding home.md

Chore: remove all contents from home.md

Chore: add new introduction to index.html content

Chore: update navbar.html font with new german-one-cursive class

Chore: update footer.html links with new german-red-link class

Chore: add Roboto font import to base.html

Style: update styles.css

Docs: update README.md

Docs: update README.md

Chore: replace NounWithArticles with BaseNoun class in repository

Chore: remove articles from docs

Chore: remove class NounWithArticles from schema

Chore: remove articles from nouns responses in router

Docs: update README.md