UX improvements for mobile

[Goosetaf]

Key Changes

• Give tables a minimum width and allow them to horizontally scroll
• Properly fetch unpaid and unsent items on homepage when not admin
• Name list improvements
  • New PDF design
  • Allow pasting in newline-separated names in name lists
  • Enter to move to next/add name
  • Backspace in empty field to remove
  • "Today" button for date
• Receipt creator improvements
  • New PDF design
  • Enter to move fields and add items
  • Backspace in first field to remove
  • "Seller" field
• Pliancy for bank accounts and orgs
• Make navbar work better on screens with low width
• Add PWA support

Related Issues

• Closes As a user, I want a simpler way to past participation lists, so that I can just copy them over from another document #7
• Closes As a treasurer I would like the button to open the transactions page to look more clickable, since currently you do not understand that it does something #5

Screenshots