Merge branch 'feature/pirati-cz' into feature/pirati-cz-bugfixes

main/models.py

main/static/main/css/styles.css

...rce/_patterns/atoms/buttons/from-button-animated.mustache

...de/source/_patterns/organisms/newsletter-section.mustache

...guide/source/_patterns/organisms/twitter-section.mustache

main/styleguide/source/css/molecules/contact_box.pcss

main/templates/main/blocks/twitter_block.html

main/templates/main/includes/form_button_animated.html

main/templates/main/includes/newsletter_section.html

main/templates/main/includes/twitter_widget.html