add program & news section

elections/blocks.py

elections/migrations/0012_alter_electionshomepage_content.py

elections/models.py

elections/templatetags/rawtext.py

main/blocks.py

main/models.py

shared/blocks/main.py

.../styleguide2/includes/molecules/program/card_program.html

...eguide2/includes/organisms/articles/articles_section.html

...rganisms/candidates/elections/candidate_primary_list.html