Merge branch 'graphql' into 'master'

Dockerfile

composer.json

composer.lock

js/customElements/blogFooter.js

js/customElements/blogIndex.js

js/customElements/commentsDisplay.js

js/customElements/contactMailButton.js

js/customElements/ebkBanner.js

js/customElements/newComment.js

js/customElements/sellingTable.js

js/customElements/skills.js

js/viewPost.js

package.json

public/API/config.php

public/API/ebk.php

public/API/getBlogElements.php

public/API/getMail.php

public/API/getPost.php

public/API/graphql.php

public/API/newComment.php