Urlencode strings for sharing

district/templates/district/district_article_page.html

donate/templates/donate/donate_info_page.html

donate/templates/donate/donate_project_page.html

donate/templates/donate/donate_region_page.html

...gn/templates/senat_campaign/senat_campaign_news_page.html

...templates/senat_campaign/senat_campaign_program_page.html

shared/templates/shared/article_preview.html

shared/templates/styleguide/2.3.x/article_card.html