implement new changes

main/blocks.py

...94_remove_mainhomepage_contact_newcomers_link_and_more.py

main/models.py

main/static/main/main.css

main/static/main/main.js

...main/includes/molecules/blocks/icon_title_text_block.html

...tes/main/includes/molecules/navbar/additional_button.html

...tes/main/includes/molecules/navbar/additional_button.yaml

...es/main/includes/organisms/articles/articles_section.html

main/templates/main/includes/organisms/layout/navbar.html

main/templates/main/main_person_page.html

main/templates/main/main_program_page.html

main/templatetags/perex.py