Add ecomail to uniweb, district & main, hooks

...ations/0317_alter_districtarticlepage_content_and_more.py

district/models.py

...ons/migrations/0071_alter_electionsarticlepage_content.py

...migrations/0155_alter_mainarticlepage_content_and_more.py

shared/static/styleguide2/pirati-ui.svg

...grations/0128_alter_uniwebarticlepage_content_and_more.py

...129_uniwebhomepage_ecomail_newsletter_list_id_and_more.py

uniweb/migrations/0130_uniwebhomepage_newsletter_list_id.py

uniweb/models.py