refactor(webapp): refactor create post page

Created by: maeckes-infinitylabs

🍰 Pullrequest

On the Create Post Page:

• Changes text "Create a new Post" to "Create a new article"

• Removes padding so we have no border around the button when hovering. uses hover color of ds-button component:

• Fixes width issue of create form:

• Adds condition to hide event city if online-event is selected

Issues

• relates #6336 (closed)

Todo

• Remove inline style and add css classes