Refactor StreamField use_json_field

...ations/0102_alter_districtarticlepage_content_and_more.py

district/models.py

...ons/0025_alter_donateprojectpage_crowdfunding_and_more.py

donate/models.py

...s/0052_alter_elections2021articlepage_content_and_more.py

elections2021/models.py

...grations/0007_alter_greendealhomepage_content_and_more.py

green_deal/models.py

main/menu.py

...migrations/0042_alter_mainarticlepage_content_and_more.py

main/models.py

.../migrations/0010_alter_regkonhomepage_content_and_more.py

regulace_konopi/models.py

...010_alter_senatcampaignhomepage_about_gallery_and_more.py

senat_campaign/models.py

...grations/0005_alter_senatehomepage_candidates_and_more.py

senate/models.py

shared/models.py

...grations/0034_alter_uniwebarticlepage_content_and_more.py

uniweb/models.py