add pdf, update donation page sizing

district/migrations/0126_districtpdfpage.py

district/models.py

district/templates/district/district_pdf_page.html

...tions/0042_remove_donatehomepage_custom_url_1_and_more.py

donate/static/donate/assets/css/style.css

shared/models/base.py

shared/static/shared/js/pdf_page.js

shared/static/shared/vendor/pdf.js-4.0.379/pdf.mjs

shared/static/shared/vendor/pdf.js-4.0.379/pdf.mjs.map

shared/static/shared/vendor/pdf.js-4.0.379/pdf.worker.mjs

...ed/static/shared/vendor/pdf.js-4.0.379/pdf.worker.mjs.map

shared/templates/shared/pdf_snippet.html

...tions/0054_alter_uniwebhomepage_top_menu_uniwebpdfpage.py

uniweb/models.py

uniweb/templates/uniweb/uniweb_pdf_page.html